saliva	唾液
spit	唾液, 口水

to salivate	分泌唾液, 流口水
to spit - spat	吐, 吐口水, 吐痰,

My stomach is grumbling. I'm hungry!

我的胃在(呱呱)叫。我餓了！

Please don't spit on the sidewalk.

請不要在行人道上吐痰。

to burp	打嗝
to belch	打嗝
to hiccup	打嗝

to have the hiccups

打嗝

intestines	腸子, 腸
bowels	腸子
guts	腸子
indigestion	消化不良
nauseous	噁心(的)
heartburn	胃痛, 胃灼熱的痛

to digest	消化
to feel queasy	感覺到想反胃, 感覺到想嘔吐

to vomit	嘔吐
to throw up - threw up

I'm feeling sick. I think I'm going to throw up.

constipation	便秘
diarrhea	腹瀉
bowel movement	排便
gas	氣, 氣體
fart	屁

to fart	放屁
to pass gas	送氣, 傳送氣體

feces	排泄物
excrement	排泄物, 糞便
crap	屎

to defecate

排泄