If you want to calculate the number of calories you eat each day, it's best to keep a log of your diet.

要是你想计算你每天摄入的卡路里含量，那最好留一份你的饮食日志。

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For this, you need to keep a log; bulk load and import programs often log to a file, but inside the database you need to use a table.

为此，需要维护一个日志；批量装载和导入程序常常将日志写入一个文件，但是在数据库中需要使用一个表。

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The more we study a subject, the more it sinks in. Be sure to keep a log book of new words and visit it often!

我们对一门课学习得越多，吸收的知识就越多。一定要准备一个笔记本来记录新词并常常温习。

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The guardian would have to keep a log of the hours and certify they were completed.

WSJ: Driver's Ed, for Parents

To satisfy Campbell's concerns regarding its operations, O'Neill agreed to keep a log of all business phone calls and office appointments.

FORBES: Whose Rolodex is it, anyway?

It means your car might keep a log of how you drove it or that your Xbox might be tracking every person in the room and watching their facial expressions to decide which ads to show them.

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