他对自己的演讲提前做了精心的准备。

He prepared his presentation carefully in advance.

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本周大家为英语艺术节的各项活动做了精心的准备。

This week the students are working hard to prepare for the English May Festival.

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尽管做了精心的准备，但是面试时难免会暴露出你的弱点，不要惊慌。

If, despite all your preparation, a weakness is revealed during the interview, don't panic.

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And he was working out really hard and he prepared for it.

为这个比赛，他很勤奋地锻炼，做了精心的准备。

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