这种植物的生长速度很快。

Zhè zhǒng zhíwù de shēngzhǎng sùdù hěn kuài.

This kind of plant grows very fast.

这颗树也生长得太快了吧！

Zhè kē shù yě shēngzhǎng de tài kuài le ba!

This tree is growing way too fast, isn't it?!

键盘植物生长得很快。

Jiànpán zhíwù shēngzhǎng de hěn kuài.

The plants are growing very quickly.