以tract结尾的单词

例句：

Abstract art is an acquired taste.

要慢慢培养才会欣赏抽象艺术。

It's not a question of some abstract concept of justice.

这不是一个有关正义的'某一抽象概念的问题。

A modern abstract painting takes over one complete wall.

一幅现代抽象画占了整整一面墙。

We may talk of beautiful things but beauty itself is abstract.

我们尽可谈论美的事物，但美本身却是抽象的。