1 . 在每天的早晚高峰期间，堵上半小时是常有的事，要是下雨的话，堵的时间就更长了。(stuck)(汉译英)

2 . But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for themselves—goals that pose a real challenge. (英译汉)

3 . 如果我们把英语学习看成是了解文化的一种方式，而不是一门考试学科，我们也许就会体会到其中的学习乐趣。(regard) (汉译英)