他的事业正在蓬勃发展。
tāde shìyè zhèngzài péngbófāzhǎn 。
His career is developing vigorously.
这个城市在最近几年蓬勃增长。
zhègè chéngshì zài zuìjìn jīnián péngbó zēngzhǎng 。
This city has grown vigorously in recent years.
学生们在课堂上表现得十分蓬勃。
xuéshēng mén zài kètáng shàng biǎoxiàn dé shífēn péngbó 。
The students were very vigorous in class.