Țin cartea în mână.

Țin is the 1st person singular present form of a ține.

In this sentence, it means I hold or I am holding.
Depending on context, a ține can also mean things like to keep, to maintain, or to support, but here the natural meaning is to hold.

Romanian often leaves out subject pronouns when they are not needed.

The verb form țin already tells you the subject is I, so eu is usually omitted:

• Țin cartea în mână. = I’m holding the book in my hand.
• Eu țin cartea în mână. = also possible, but eu adds emphasis, like I am the one holding it.

This is called a pro-drop language pattern.

Because cartea means the book, while carte means book or a book.

Romanian usually puts the definite article at the end of the noun:

• carte = a book / book
• cartea = the book

So cartea is used because the sentence refers to a specific book.

It can be either, depending on context.

Romanian does not normally use a separate progressive form like English am holding. The simple present țin can cover both:

• I hold
• I am holding

In this sentence, the most natural English translation is usually I am holding the book in my hand, because it describes a current action.

Both are possible, but they mean slightly different things in tone.

• în mână = in hand / in my hand when the owner is obvious from context
• în mâna mea = in my hand, stated explicitly

Romanian often leaves possession unstated with body parts when it is clear. So Țin cartea în mână sounds natural and concise.

If you want to emphasize whose hand it is, you can say:

• Țin cartea în mâna mea.

În means in, and în mână is the normal Romanian expression for in the hand / in one’s hand.

Even though something is not literally inside the hand, this is the standard idiomatic way to say it, just as English also says in my hand.

So:

• în mână = in hand / in the hand

Both are functioning as accusative forms in this sentence:

• cartea is the direct object of țin
• mână comes after the preposition în, which also takes the accusative here

However, in Romanian, the accusative often looks the same as the nominative, so you do not see a special extra ending in this sentence. The grammar tells you the case more than the form does.

Yes. Romanian word order is flexible, although Țin cartea în mână is the most neutral order.

This sentence follows a very common pattern:

• Verb + object + prepositional phrase

Other orders are possible, but they change emphasis:

• În mână țin cartea. = emphasizes in my hand
• Cartea o țin în mână. = emphasizes the book

So the original version is the most straightforward, everyday phrasing.

A simple pronunciation guide is:

țin KAR-tea în MÂ-nə

A few important sounds:

• ț sounds like ts in cats
• â is a Romanian vowel with no exact English equivalent; it is a central, deeper vowel
• ă sounds like the a in sofa

So:

• Țin ≈ tsin
• cartea ≈ KAR-tea
• în ≈ a short nasal-like în
• mână ≈ MÂ-nə

The main stress is on:

• CAR-tea
• MÂ-nă