He is tying up his horse.

他啊，还在下面拴他的马呢。

What are you doing? —I'm just tying up my shoelaces.

你在干什么? ——我在系鞋带。

These goods are tying up his capital and his storage space.

这些商品完全占用了他的资金和存储空间。

Or you can read Web pages at home without tying up a phone line.

或者不用束起电话线就可在家阅读网页。

Leonard pottered round the greenhouse, tying up canes for the tomatoes.

伦纳德在温室里悠然自得地给西红柿绑上撑杆。