例句：

　　1、The course allows students to progress at their own speed.

　　本課程允許學(xué)生按各自的速度學(xué)習(xí)。

　　2、He was driving at well over the speed limit.

　　他當(dāng)時(shí)開車的速度遠(yuǎn)遠(yuǎn)超過了限制。

　　3、This course is designed so that students can progress at their own speed.

　　這門課的設(shè)計(jì)思路是讓學(xué)生自己掌握進(jìn)度。

　　4、It is vital to keep a check on your speed.

　　經(jīng)常檢查并控制你的車速是至關(guān)重要的。

　　5、You should always keep to the speed limit.

　　什么時(shí)候你都不得超過最高速度限制。