趣英语 / intervals造句

intervals造句

George struggled wildly, going under and resurfacing at regular intervals.
乔治疯狂地挣扎，不断在水面上浮浮沉沉。

Make a point of backing up your files at regular intervals.
一定要定期备份文件。

The cartridge must be replaced at regular intervals.
弹药必须定时更换。

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