someone's bark is worse than their bite

said of someone whose fierce and intimidating manner does not reflect their nature

嘴巴狠，心腸軟

be bitten by the — bug

develop a passionate interest in a specified activity

開始迷上，熱衷于

Joe was badly bitten by the showbiz bug at the age of four.

喬四歲就迷上了演藝活動。

bite the big one

(N. Amer. informal)die

(北美，非正式)死去，咽氣

bite the bullet

decide to do something difficult or unpleasant that one has been putting off or hesitating over

最終下定決心行動起來

bite the dust

(informal)be killed

(非正式)被殺死

bite the hand that feeds one

deliberately hurt or offend a benefactor

恩將仇報

bite someone's head off

bite one's lip

dig one's front teeth into one's lip in embarrassment, grief, or annoyance, or to prevent oneself from saying something

（因尷尬、悲傷、生氣或不愿開口）而緊咬著嘴唇

bite one's nails

chew at one's nails as a nervous habit

（緊張時習慣性地）咬指甲，焦躁不安

the biter bitten (或 bit)

used to indicate that someone is being treated in the same way as they have treated others, typically badly

騙人者遭騙

bite one's tongue

make a desperate effort to avoid saying something

一言不發，死不開口

I had to bite my tongue and accept his explanation.

我只得一言不發地接受了他的解釋。

one could have bitten one's tongue off

used to convey that one profoundly and immediately regrets having said something

話剛出口就懊悔不已

once bitten, twice shy

(proverb)an unpleasant experience induces caution

(諺)一次吃虧，下次小心；一次被咬，下次膽小

put the bite on

(N. Amer. & Austral. informal)borrow or extort money from

(北美，澳，非正式)向…借（或勒索）錢財