I have a black coat.

我有一件黑色外衣。

A black coat is a joker item, suitable for various occasions.

黑色外套是百搭的单品，适合各种场合。

She's got a black coat on.

她穿着一件黑色外套。

He is in a black coat.

他穿着黑色的外衣。

Tom has on a black coat.

汤姆穿着一件黑外套。

The robber is dressed in a black coat.

那个抢劫犯穿着黑大衣。

Do you want to borrow my coat? I have a black coat that would look smashing on you.

你想不想借穿我的外套？我有一件黑色的外套，穿在你身上一定会很好看。

He put on a black coat so that he would be inconspicuous .

他穿了一件黑外套，为了让自己不显眼。