1.keep an eye on 留意
He had been sent here to keep an eye on Benedict.
他被派到这儿监视贝内迪克特wzz31Mv@H&。
2.touch off 引发；触发
Some slight incident may touch off a major war.
一件小事可以触发一场大战Q(Mb1,Jg,C|,blPtf。
3.used to 曾经
I feel more compassion and less anger than I used to.
我觉得自己比过去多了些同情，少了些怒气)D1wQqVX06-Af[uO^。

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