This child has been a slowcoach since childhood.

这个孩子从小就是个慢性子。

I don't want to leave the matter to the slowcoach.

我不想把这件事交给这个慢吞吞的人去做。

The slowcoach missed the last bus.

这个磨磨蹭蹭的家伙没赶上最后一班公交车。

"Come on, slowcoach," said Frank, pushing up the pace still more.

“快点，你个慢性子，”法兰克说，一边加快了步伐

He does anything at at a snail's pace.He is really a slowcoach.

他做什么事情都慢吞吞地。真是个名副其实的慢性子。