change at的用法和樣例：
例句
- The two sets of traffic lights were out of phase (ie did not show the same change at the same time) and several accidents occurred.
那兩組交通燈不同步因而發(fā)生了幾起事故。 - He had to make a quick change at Shanghai.
他不得不在上海匆忙換車(chē)。 - He had to make a quick change at Crewe.
他得在克魯迅速換車(chē)。
