重点讲解：
1. out of control 失去控制；不受控制；
A truck ran out of control on the hill.
一辆卡车在山上失去了控制X~Wz[vkM6a&。
2. leave behind 留下；余留；
The criminal didn't leave behind any traces of his crime.
罪犯没有留下任何作案的痕迹*P).@w[*9]XCJzV9。
3. at least （数量）至少，不少于；
It takes at least an hour to get home from work.
下班回家至少得花一个小时~glH+Vxp=.u7&|-。
4. plough through （车辆或导弹）猛力穿过，失控冲过；
The car ploughed through three gardens and flattened a tree.
小轿车轰然穿过3个花园，还碾倒了一棵树^-kh^9pW&@mlDu%。