The mud on his shoes left lots of footprints around the room.

Score the paper to make it easy to fold.

在纸上先划好印子,以便折叠.

His feet left dirty marks all over the floor.

他的脚在地板上到处留下了脏印子.

The hunter followed the tracks of the lion.

猎人跟着狮子的踪迹走(追踪狮子).

The hounds found the trail of the fox.

猎犬发现了狐狸的踪迹.

They couldn't find any trace of the lost children.

他们一点也找不到丢失的孩子的踪迹.

If they had to part, it could not be under Miss Ley's cold eyes.

倘使他们要告别, 那就不能处在莱伊尔小姐那冷冷的注视之下.

It will make a nice row if that comes out.

倘使事情一传出去,要轰动一时的呢.

If she had been at all psychic she must have felt something.

倘使她是那种有心灵感应的人,她一定有所感触.

Had we yielded, the system would have been immortal.

倘使我们当时作了让步, 这个体系就会永远存在下去.

Divided, there is little we can do.

倘若分裂, 我们则无所作为.

How would this solution differ if the lower charge were negative?

倘若下面的电荷是负的,那么结果有什么不同?

Seal the envelope with glue.

你用浆糊把信皮儿封起来吧.

The cover read : Poisons in the Dark Arts: History, Theory, and Practical Application.

封皮上写着: 黑暗魔法中的魔药,历史, 理论, 以及实际应用.

They can do the binding too.

封皮他们也能搞.

My book has a light blue cover.

我的书是浅蓝色封皮.

The cover of the book was in very good shape.

书的封皮完整无损.

Please bring me the notebook with a slate-gray cover on my desk.

请帮我把办公桌上的那个瓦灰色封皮的笔记本拿过来.

Do you like the book whose cover is yellow?

你喜欢那本黄色封皮的书 么 ?

I got it cheaply as its cover was torn.

我廉价买下了它,因为它的封皮坏了.

The cover of the parcel won't tear.

这包裹的封皮扯不开.