qǐng bǎohù yìsuìpǐn, yǐmiǎn sǔnhuài.

Yes, 请 here works like please, but in Chinese it often marks a polite request more broadly.

In this sentence, 请保护易碎品 means something like:

• Please protect the fragile items
• Please handle the fragile items carefully

On signs, notices, and instructions, 请 is very common. It can sound polite without being overly personal.

Chinese often omits the subject when it is obvious from context.

In a warning sign, package label, or instruction, the understood subject is usually:

• you
• the reader
• whoever is handling the item

So 请保护易碎品，以免损坏 naturally means Please protect the fragile items so that they are not damaged, even though you is not stated.

This is very common in Chinese instructions.

Yes, 易碎品 is a set phrase and is often treated like one vocabulary item.

It breaks down like this:

• 易 = easy to
• 碎 = break, shatter
• 品 = item, article, goods

So literally it means items that break easily, or fragile items.

You may also see related forms such as:

• 易碎 = fragile
• 易碎物品 = fragile objects/items

In packaging language, 易碎品 is very common.

Because 易碎品 is a compact noun phrase, and 易碎 directly modifies 品.

Chinese often leaves out 的 in short, fixed, or closely connected modifier + noun combinations, especially in formal or written expressions.

Compare:

• 易碎品 = fragile items
• 贵重物品 = valuable items
• 危险品 = dangerous goods

If you added 的, it would usually sound less like a fixed label and more like a fuller descriptive phrase. In this case, 易碎品 without 的 is the normal form.

Yes, 保护 literally means to protect.

In this sentence, it means something like:

• protect from damage
• keep safe
• handle carefully so it does not get harmed

In English, protect can sound a little stronger than what we usually say on a package. In Chinese, though, 保护 can work in instructions like this.

That said, on real packaging, other phrases are often even more common, such as:

• 小心轻放 = handle with care / handle gently
• 注意轻放 = please handle gently
• 易碎 = fragile

So 保护 is understandable and correct, but depending on context, another phrase may sound more standard.

以免 means so as to avoid or in order to prevent.

Its pattern is usually:

• do A, 以免 B
• do A, so that B does not happen

In your sentence:

• 请保护易碎品，以免损坏
• Please protect the fragile items so as to avoid damage

This is a fairly formal written connector. It is common in notices, instructions, and formal writing.

Similar English translations include:

• to avoid...
• so as not to...
• lest... (more formal/literary in English)

损坏 means to damage or to become damaged. It is more formal and specific than 坏.

• 坏 often means bad, broken, or not working
• 损坏 specifically refers to physical damage

Examples:

• 机器坏了。 = The machine is broken.
• 包装损坏了。 = The packaging was damaged.

In this sentence, 损坏 fits well because we are talking about fragile items getting physically damaged.

So 以免损坏 means to prevent damage or so they do not get damaged.

The thing getting damaged is understood to be 易碎品.

Chinese often leaves out repeated objects when they are already clear from context.

So the sentence is understood as:

• 请保护易碎品，以免（易碎品）损坏。

In English, we often repeat the object more explicitly, but Chinese does not need to.

It is functioning verbally here, but in English we often translate it with a noun phrase like damage.

So:

• 以免损坏 literally = in order to avoid becoming damaged / being damaged
• natural English = to avoid damage

This is common in translation: Chinese may use a verb, while English prefers a noun expression.

The comma separates the main request from the purpose/prevention part.

Structure:

• 请保护易碎品 = main instruction
• 以免损坏 = purpose/result to avoid

So the comma helps show:

• Please protect the fragile items, so as to avoid damage.

Chinese punctuation is often used to make the structure clearer, especially in formal written sentences.

Yes, it is understandable and grammatically fine, especially in a formal written style.

However, depending on the exact context, more common label-style expressions might be:

• 易碎品，请小心轻放。 = Fragile. Please handle with care.
• 易碎，轻拿轻放。 = Fragile, handle gently.
• 请小心搬运，以免损坏。 = Please transport carefully to avoid damage.

So your sentence is correct, but in real-life packaging Chinese, shorter and more conventional wording is often preferred.

Not directly in the same structure.

• 以免 is a connector: do A, 以免 B
• 避免 is a verb: avoid B

So these are different:

• 请保护易碎品，以免损坏。
• 请保护易碎品，避免损坏。 ← less natural as written

A more natural sentence with 避免 would be something like:

• 请小心搬运，避免损坏。
• 请采取保护措施，避免物品损坏。

So 以免 is especially good when you mean so that something bad will not happen.

There are no major special tone changes here beyond normal connected speech.

Pinyin:

• 请 qǐng
• 保护 bǎohù
• 易碎品 yìsuìpǐn
• 以免 yǐmiǎn
• 损坏 sǔnhuài

A few pronunciation tips:

• 请 qǐng: make sure the final -ng is clear
• 护 hù and 坏 huài: both start with h, not f
• 碎 suì: don’t pronounce it like English sway; it is s + uei
• 损 sǔn: the u here is the ü sound after s, written as u in pinyin spelling rules

The tones are:

• qǐng = 3rd
• bǎo = 3rd
• hù = 4th
• yì = 4th
• suì = 4th
• pǐn = 3rd
• yǐ = 3rd
• miǎn = 3rd
• sǔn = 3rd
• huài = 4th

In natural speech, some 3rd tones become lighter or rise differently, but the dictionary tones above are the ones to learn first.