expression作为表情可数吗

意思作表示；表情和（数学）表达式；词的时候可数。expression的名词复数为expressions。

expression.

释义n.表现，表示，表达；

表情，脸色，态度，腔调，声调；

数式，符号；

词句，语句，措辞，说法。

Laughter is one of the most infectious expressions of emotion.

笑是最具感染力的情感表达方式之一。

The civil servant\'s expression, however, did not change, not so much as by a flicker.

然而，那位公务员的表情还是那样，丝毫没变。

I don\'t sing perfectly in tune, but I think I put more expression into my lyrics than a lotof other singers do.

我唱歌不是特别合拍，但我认为我唱得比其他很多歌手都更富感情。

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。

This forms the basis for our mathematical expression for the electric field.