他失去了平衡，头部先着了地。

He overbalanced and fell head first.

《柯林斯英汉双解大词典》

开车前，先着车升温。这样可以减低车窗里湿气的凝结。

Warm up vehicle before driving off. It reduces moisture condensing on the inside of the windows.

youdao

“不懂法律并不意味着当你触犯法律时，法律会对你网开一面。”来自英国的律师大卫·艾伦·格林说。那么，你觉不觉得我们应该在按下“发送”之前，最好先花一两分钟思考一下我们在社交媒体上使用的文字或表情符号？

"Not knowing the law doesn't mean the law will treat you any differently if you break it." says David Allen Green, a lawyer from the UK. So, do you think we'd better spend a minute or two thinking about the words or emojis we use on social media before we press "send"?

youdao

All right, so hopefully if you see any other combination of quantum numbers, for example, if it doesn't quickly come to you how many orbitals you have, you can actually try to write out all the possible orbitals and that should get you started.

所以希望你们如果遇到,任何其它的量子数组合的问题，如果你们不能马上想到有多少个轨道，可以试着先写出所有的轨道,这是个不错的切入点。

麻省理工公开课 - 化学原理课程节选

You could read some rules on pronunciation, you can try to practise those on your own.

你可以先学习一些发音规则，然后尝试着自己进行练习。

想征服英语的话 - SpeakingMax英语口语达人

They were pretty slow off the mark to do something about this, and it was after lawsuits were filed that they actually made the change.

他们先慢腾腾的应付着,直到诉讼结束时才真正做出改变

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选