She is clearly the most articulate and self-possessed member of her family.

显然，她是全家口才最好、最沉着冷静的人。

《柯林斯英汉双解大词典》

We've found him ourselves, miles from home, and quite self-possessed and cheerful!

我们自己就找到过他，离家好几英里，他很镇定，也很高兴！

youdao

On my third nanny interview I encountered a reserved, self-possessed mother of a baby girl the same age as my son.

在我面试到第三个保姆的时候，我遇到了一个稳重、冷静母亲，她的女孩和我小儿子一样大。

youdao

Juno, played very smartly by Ellen Page, comes off as thoroughly self-possessed and not quite as worldly as she thinks.

NPR: This Season, the Scrappy Heroes Are Wearing Skirts

Proud's character is said to be self-possessed and a little snobbish, with a low opinion of his mother's boyfriend, Minty.

BBC: Disabled character for EastEnders

In 1818, a half-educated but boldly self-possessed beauty named Fanny Brawne (Abbie Cornish) captures the admiration, and then the love, of a tubercular young man (Ben Whishaw).

NEWYORKER: Bright Star