Generally logrotate runs automatically on a timed basis, but it can also be run manually.

logrotate通常是定时自动运行的，但是也可以手工运行。

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Shwup automatically made and added three muvees to my album, using my photos put to music it chooses with dramatically timed transitions.

Shwup自动为我的相册制作和添加了三个短片，在我的相片上添加它所选择的音乐和极其精准的变调。

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Timed feeders can automatically provide food for your pet at mealtimes.

定时喂食器在吃饭时间会自动替宠物添饲料。

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Timed botnet attacks could also be organized to launch automatically, without an external go-ahead.

FORBES: Magazine Article