La corbeille contient le doublon.

It follows a very standard French word order:

• La corbeille = the subject
• contient = the verb
• le doublon = the direct object

So the pattern is:

subject + verb + object

That is the same basic order as in English: The basket contains the duplicate.

Because French nouns have grammatical gender.

• corbeille is feminine, so it takes la
• doublon is masculine, so it takes le

So:

• la corbeille = the basket
• le doublon = the duplicate

This gender is a property of the noun itself. It does not mean the object is literally female or male.

Corbeille often means basket, but depending on context it can also mean bin, wastebasket, or basket-like container.

So in different situations, la corbeille could refer to:

• a basket
• a paper basket
• a trash bin
• a container on a computer interface, in some contexts

The exact English translation depends on the situation, even though the French word stays the same.

Contient is the third-person singular present tense of contenir, which means to contain.

So:

• je contiens = I contain
• tu contiens = you contain
• il / elle contient = he / she / it contains
• nous contenons = we contain
• vous contenez = you contain
• ils / elles contiennent = they contain

In this sentence, la corbeille is singular, so the verb must also be singular:

• La corbeille contient...

A useful thing to notice is that contenir is related to tenir.

French often uses the simple present where English might use several different forms.

So contient can correspond to:

• contains
• does contain
• sometimes even is containing, depending on context

In most ordinary sentences, French does not add a separate auxiliary like English does.

So:

• La corbeille contient le doublon = The basket contains the duplicate
• It could also be understood as The basket does contain the duplicate if you want emphasis in English

Because le means the, while un means a or an.

• le doublon = the duplicate → a specific duplicate
• un doublon = a duplicate → one duplicate, not specifically identified

So the sentence as written refers to a particular duplicate already known from the context.

This is a very common distinction in French:

• le / la / les = definite article
• un / une / des = indefinite article

Yes. Depending on context, doublon can refer to:

• a duplicate
• a duplicate copy
• historically, a doubloon (a coin)

So context matters a lot.

If the meaning shown to the learner is duplicate, then that is the right interpretation here. But it is good to know that the word can have another meaning in different contexts.

A careful pronunciation is approximately:

la kor-bey კონ-tyan luh doo-blon

A more precise IPA version is:

/la kɔʁ.bɛj kɔ̃.tjɛ̃ lə du.blɔ̃/

A few useful points:

• corbeille ends with a sound like bey
• contient has a nasal vowel at the end: -tjɛ̃
• doublon also ends in a nasal sound: -blɔ̃
• the final t in contient is not pronounced

There is no important liaison to make in this sentence, so each word stays fairly separate in normal pronunciation.