重點講解：
1. impose on 強制實行；強加；
The City Council votes unanimously to impose fines on dog owners and to set standards on how much barking is too much.
市議會投票一致同意，將制定狗叫是否過量的標(biāo)準(zhǔn)，并且會對狗的主人征收罰金。
2. be involved in 卷入的；參與的；與…有密切關(guān)聯(lián)的；
I suspect that he is more or less involved in the affair.
我猜他和這件事有點牽連。
3. engage in 參與；從事；
All employees engage in sales, operations, and finance, with no specialization.
所有的員工都參與銷售、營運和財務(wù)，沒有特別的職責(zé)劃分。
4. converge on 匯集；集中；聚集；
Enthusiasts from around the world converge on Le Mans for the annual car race.
熱心的觀眾從世界各地涌到勒芒市觀看一年一度的汽車比賽。