Undulina
[医] 锥虫属
🗣️ 情景例句
What a pity! We have another party that day.
太可惜了，我们那天也有个聚会。
A crow is never the whiter for washing herself often.
乌鸦不管怎样经常洗澡，也不会变白。
Many pedal their tricycles, but most of them prefer to push or drag them.
很多孩子用脚蹬车，但多数孩子更愿意推或是拉着三轮车。