Be sure to do the sowing in good time.

确保适时播种.

《现代汉英综合大词典》

Therefore, when using the Internet, be sure to do it in moderation.

所以在上网时, 还是要有所节制才好.

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If you are going to throw up, be sure to do it in the sick bag.

如果您想吐的话, 一定要吐到呕吐袋里.

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Make sure you speak your mind and be sure to do so with conviction.

确定你说你的思想而且确定用信念这麽做.

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Be sure to do that.

一定呦!

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