It can be very hard to accept defeat, but if we overcome it we will make progress.

接受失败相当难，但如果我们克服了这一点，就会取得进步。

youdao

But if we want our kids to realize their full physical, learning and social ability, sleep is important.

但如果我们想让我们的孩子充分发挥他们身体的、学习的和社交的能力，睡眠是很重要的。

youdao

But if we keep clearing up the myths and learning more about the eyes, someday a full transplant may be possible.

但如果我们继续拨开迷雾，了解更多关于眼睛的知识，总有一天，完整的眼睛移植会成为可能。

youdao

He died in eighteen ninety-two. But if we can believe his poetry, death held no terrors for him.

VOA: special.2009.04.12

From moment to moment, language changes, but if we're to understand it as language we have to honor its simultaneity.

语言无时无刻不在变化，但是如果我们要理解它,我们就必须尊重它的同时性。

耶鲁公开课 - 文学理论导论课程节选

But if we accept the no branching rule, we're saying whether or not we've got identity depends on what's happening elsewhere.

但如果我们接受了无分支规则，就等于赞同，我们是否有认同感依赖于在别处发生的事情。

耶鲁公开课 - 死亡课程节选

But if we needed to, we could probably make it without serious problems - three months.

NPR: New Orleans Family Heads North

But if we stick with our messy, analog cortexes, then we have a different problem.

FORBES: Computing Desire

But if we want Congress to hear us we need to join together in a chorus.

CNN: Stamp stampede on your dollar -- for democracy