expressio可数吗

expression双语例句：

1、These expressions are often used interchangeably, but they do have different meanings.

这些表达方式经常相互替代使用，但它们的含义却有所不同。

2、From Cairo came expressions of regret at the attack.

开罗对此次攻击表示遗憾。

3、She spoke in a quiet voice but used remarkably coarse expressions.

她说话声音很小，但是用了些特别粗俗的字眼儿。

4、I couldn't see Helen's expression, because her head was turned.

我看不到海伦的.表情，因为她转过头去了。

5、The silence lengthened. Bella's expression was inflexible.

沉默了良久，贝拉的表情依然很坚定。