We should make it clear whether the damage was caused in transit or during the unloading process, or by other reasons.
我们要弄清楚货物是否在运输途中受损,还是在卸货过程中受损,或者别的原因。
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手,但在驾驶公共汽车之前,他们必须通过一项专门测验。