英语听力精选进阶版 13297（在线收听）

Robocrab's claws key to mating success

Vocabulary

heaving

very busy

moves

best dancing movements

a mate 

sexual partner

fancies

finds attractive (informal)

suitors

potential partners (an old-fashioned term)

unforgiving

continuously harsh

vigorous

strong and energetic

to beef up

to become big and strong

hang out with

spend leisure time with

weedy