这个词组有两个含义：
1.被……咬，叮；蜇
We were badly bitten by mosquitoes.
我们被蚊子咬得不行。
mosquito [məˈskiːtoʊ]
n.蚊子
复数： mosquitos mosquitoes
I was bitten by a dog once and I've been afraid of them ever since.
我曾被狗咬过，自那以后就一直害怕狗。
Every year in this country more than 50,000 children are bitten by dogs
每年这个国家有5万多儿童被狗咬伤。
The boy was bitten by a mad dog.
那个男孩被一条疯狗咬了。
He had been bitten by a rattlesnake.
他被响尾蛇咬过。
rattlesnake [ˈrætlsneɪk]
n.响尾蛇(产于美洲)
He was bitten by a snake.
他被蛇咬伤了。
He was bitten by an insect in the garden.
他在花园里被虫子咬了一口。
2. 对某事物着迷；热衷于某事物
He's been bitten by the travel bug .
他迷上了旅游。
bug [bʌɡ]
n.(机器，尤指计算机的）故障，程序错误，缺陷 ;虫子;小昆虫;轻微的传染病;小病;热衷;着迷;窃听器
vt.在(某处)装窃听器;窃听(谈话);使烦恼;使恼怒
I've definitely been bitten by the gardening bug
我被园艺彻底迷住了。
definitely [ˈdefɪnətli]
adv.肯定;没问题;当然;确实;确切地;明确地;清楚地
She was never interested in fitness before but now she's been bitten by the bug.
她以前从来不在乎健身，现在她却着了迷。