除了be sick，呕吐的英文还有什么？

比较常用的（说完不会被误解或笑话的）：
throw up
vomit
puke
barf
gag
hurl
be nauseous
heave
retch
不过因为文化差异，不同地方用词也不一样

呕吐: vomit

近义词或词组
shoot the cat | barf | emesis | upchuck | throw up | puke | sick up | sickness | shoot one's cookies | vomit up | cast up | be sick | fetch up | to vomit | nausea | chunder

through out
vormit

呕吐
shoot one's cookies
sick up
spew
throw up
retch
vomit
fetch up
disgorge
都是呕吐
全吐了。哈哈