She believes in living life to the max.

她认为人应当尽量活得充实。

《牛津词典》

She believes in God and heaven and hell and the rest.

她相信上帝呀、天堂呀、地狱呀，等等，等等。

youdao

And a girl choosing him means she believes in herself.

选择他的女孩其实是相信她自己。

youdao

And,she believes in the strength of the human spirit which allows people to reach goals which might otherwise seem impossible.

VOA: special.2009.11.18

She believes the chimp virus infection is not quite as damaging as H.I.V.is in humans.

VOA: special.2009.09.08

But she says important steps were taken that,she believes, will ultimately result in an agreement to stop or retard climate change.

VOA: standard.2010.01.02

Like Britain's centrist Labour prime minister, Tony Blair, for example, she believes in individual responsibility more than in state assistance.

ECONOMIST: Charlemagne

While Ms. Acra likes having some bling in her dress, she believes in toning down her accessories for warm-weather evening events.

WSJ: Summer Evening Wear That's Both Light and Chic

Ettenberg said she believes in respecting local culture and norms as much as possible, but still there are some places she cannot envision visiting because of how she might be perceived by locals.

BBC: Should women avoid travelling alone?