Protosiphon
原生管属
🗣️ 情景例句
That's nice. Length. Length?
太好了。身高 ，多高？
It is not every couple that is a pair.
成双并非皆配偶。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。