Precipitates are usually collected by centrifugation at intervals.常常是用离心法分段收集沉淀的.Try to get into the habit of eating at least three small meals a day, at equally spaced intervals.尽量养成每天至少吃3顿小餐的习惯，而且每餐的间隔要相同。She began to ...
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...
He is shown in the tape of the beating as administering most of the blows.录像显示在斗殴中他打得最凶。Ruth never raised her voice, always sounding gentle, even when administering a rebuke.露丝从不高声讲话,声音永远是温柔的, 甚至在表示责备时也是这样.Paramedics are...
身材瘦削而且训练艰苦的女运动员行经可能不那么频繁，或者根本不来月经。Lean hard-training women athletes may men-struate less frequently or not at all.这路公共汽车行经许多街道.This bus route covers a large number of streets.当汽车行经村庄时,我看到了一群羊.I saw a flock of sheep when ...