1.dig in one's heels 坚持己见；决不妥协
The student dug her heels in and refused to obey the instructions.
这个学生坚持己见，拒绝服从命令;Lhi5AHA=&。

2.battered by 备受……打击
But the worry is whether America's exporters, battered by years of foreign competition, would be able to do so quickly.
然而，令人担忧的是，多年来备受外国竞争打击的美国出口商能否迅速打开出口市场的大门^H_R5SVAScmM。

3.ground to a halt 陷入停滞
Transport ground to a halt as heavy fog enveloped parts of China Wednesday, forcing airports and expressways to close to traffic.
周三，因为大雾笼罩，导致中国部分地区的交通陷入停滞，机场和高速公路纷纷被封闭,9&_LuMPEkLJ4)GCxj。

4.step up 加大力度；加紧
He said he would pursue ongoing restructuring and step up efforts to develop "smash-hit" products.
他表示将继续致力于重组工作，并加紧开发“轰动市场”的产品h|Ef[[-n0esw。