一定保证你认真遵循这些用法说明。

Make sure that you follow the instructions carefully.

《柯林斯英汉双解大词典》

随之而来的满足感则会导致你认真努力的积极性降低。

And then because you've felt that satisfaction, you're less motivated to do the actual hard work necessary.

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但是，如果你认真想一下，你会发现他做了很多事情，去过很多地方。

If you thought about it carefully, you could figure out he had to have been doing something, had to have been somewhere.

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However, if you do happen to be an English or a literature major or someone who's just very serious about reading at that level, you will find plenty to chew on here.

然而，如果你刚好主修英语或是文学,或是任何以主修的水平很认真阅读的人，你将会在这里发现很多值得咀嚼的东西。

耶鲁公开课 - 1945年后的美国小说课程节选

if you have no discipline, you're not going to listen. If you don't listen, you can't learn

如果你没有纪律，你就不会认真听教练的话。如果你不认真听，就学不会了。

布朗克斯的足球教练 - SpeakingMax英语口语达人

Well, you wake up in the morning and it is raining and being the conscientious and reliable young people that I know you to be, you probably forget to do it.

嗯，你早上醒来，并且在下雨,作为一个认真的，可信赖的年轻人,我知道你会这样做，你可能忘记了做。

哈佛公开课 - 计算机科学课程节选