必要时可以把它当作武器.At a pinch it can be used as a weapon.必要时, 他们愿为国捐躯.They were ready to die , if necessary, for their country.他们不怕应对这些问题，也不怕必要时来一番激烈的争论。They are not afraid to tackle the issues or let the sparks fly when necess...
Sal was the leader of the pack.萨尔是这伙人的头儿。Sal suggested that we should go for a swim.萨尔建议我们去游泳.Sandy Jipton thought it was rough on Sal.桑迪·蒂普顿觉得这可苦了莎儿....
As a learner rider you must not carry a pillion passenger.作为摩托车初学者，切勿后座载人。A slow learner can keep back the whole class.反应迟钝的学生会影响全班的进步.A learner's dictionary should give both the meanings of words and examples of th...