אל תיגע במראה; היא עוד לא נקייה.

A natural pronunciation is:

al tiga ba-mar'á; hi od lo nekiyá

A few notes:

• אל = al
• תיגע = tiga (stress on the last syllable)
• במראה = ba-mar'á
  The apostrophe helps show the little break caused by א
• היא = hi
• עוד לא = od lo
• נקייה = nekiyá

In everyday speech, the א in מראה is often very light, but it is still part of the word.

In Hebrew, אל + future form is a very common way to make a negative command.

So:

• תיגע = you will touch / you touch
• אל תיגע = don’t touch

This structure is especially common for telling someone not to do something right now or in a specific situation.

Compare:

• אל תיגע! = Don’t touch!
• לא לגעת! = No touching! / Do not touch!

Both can work, but they feel a little different:

• אל תיגע speaks directly to a person
• לא לגעת is more like a general instruction or sign

תיגע is the second person masculine singular form, so it is used when speaking to one male.

That means this sentence is addressed to one male person.

Other forms would be:

• to one female: אל תיגעי
• to more than one person: אל תיגעו

So the sentence as written is specifically:

• אל תיגע = don’t touch (said to one male)

That is because the Hebrew verb לגעת usually takes the preposition ב־.

So in Hebrew, you normally say:

• לגעת במשהו = to touch something

Literally, it is closer to touch at/on something, even though natural English just says touch something.

Examples:

• לגעת בקיר = to touch the wall
• לגעת בילד = to touch the child
• לגעת במראה = to touch the mirror

So the ב־ is required by the Hebrew verb pattern.

Because Hebrew commonly combines prepositions with the definite article ה־.

Here is the breakdown:

• ב־ = in / at / on (or the preposition used after לגעת)
• המראה = the mirror

When ב־ comes before ה־, they combine:

• ב + המראה = במראה

This is very normal in Hebrew.

The same thing happens with other prepositions too:

• ל + ה = לַ / לֶ / לִ in practice as one written word, e.g. לבית
• כ + ה = כַ / כֶ / כִ in practice as one written word

So במראה simply means in/on the mirror structurally, but with לגעת it means touch the mirror.

Hebrew nouns have grammatical gender, and מראה meaning mirror is feminine.

Because of that, when you refer back to it, you use the feminine pronoun:

• היא = she / it for feminine nouns

So:

• המראה ... היא נקייה
• literally: the mirror ... she/it is clean

In English, objects are usually it, but in Hebrew the pronoun must match the noun’s grammatical gender.

עוד לא means not yet.

Literally, עוד often has the sense of still / more / yet, depending on context.
With לא, it gives the idea that the situation has not happened so far, but may change later.

So:

• היא עוד לא נקייה = it is not clean yet

This is slightly different from a plain negation like:

• היא לא נקייה = it is not clean

That could just state a fact.
But היא עוד לא נקייה suggests:

• it’s still in the process
• maybe someone is cleaning it
• it will probably become clean later

Because adjectives in Hebrew agree with the noun in gender and number.

Since מראה is feminine singular, the adjective must also be feminine singular:

• masculine singular: נקי
• feminine singular: נקייה

So:

• מראה נקייה = a clean mirror
• היא נקייה = it is clean (referring to a feminine noun)

If the noun were masculine, you would use נקי instead.

They are two different words that are often written the same way without vowels:

• מַרְאָה = mirror
• מַרְאֶה = appearance / look / sight

In unpointed modern Hebrew, both are usually written מראה.

So how do you know which one it means?
You rely on context.

In this sentence, the context makes mirror the only sensible meaning, because:

• you can touch a mirror
• a mirror can be clean or not clean yet

So here מראה clearly means mirror.

Yes. The semicolon here links two related clauses:

• אל תיגע במראה
• היא עוד לא נקייה

The punctuation shows a pause stronger than a comma, but not a full stop.

You could also see other versions, such as:

• אל תיגע במראה, היא עוד לא נקייה.
• אל תיגע במראה כי היא עוד לא נקייה.

The version with כי makes the relationship explicit:

• כי = because

So:

• אל תיגע במראה כי היא עוד לא נקייה = Don’t touch the mirror because it isn’t clean yet

The semicolon version is just a neat written way to connect the two ideas.