We know how to prevent malaria.
我们知道怎样去阻止疟疾。
He doesn't know how to prevent his wife and his mother to quarrel.
他不知道该怎么阻止妻子和母亲之间的争吵。
It has rich experience in the line, know how to prevent the typical effects of threading quality and schedule problems.
有丰富的穿线经验,懂得预防典型的影响穿线质量和进度的问题。
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