n.蛙( frog的名词复数 );(对法国人的蔑称);
例句:
Frogs will usually breed in any convenient pond.
通常青蛙会在任何条件适宜的池塘中繁殖。
We observed the circulation of blood in frogs.
我们观察了青蛙的血液循环.
He wrote a learned book on frogs.
他写了一部有关青蛙的学术著作.