1. overdose /ˈəʊvəˈdəʊs/

-- quantity of medicine beyond what is to be taken at one time or in a given period; too big a dose

Do not take more of the medicine than the doctor ordered; an overdose may be dangerous.

服药不要超过医生所指示的用量，因为服药过量很危险。

 

 

2. oversupply /ˈəuvəsəˈplai/

-- too great a supply; an excessive supply 

We have a shortage of skilled technicians but an oversupply of unskilled workers.

我们缺少技术人员，却有过多无特殊技能的工人。

 

 

3. overburden /ˌəuvəˈbə:dn/

-- to place too heavy a load on; burden excessively; overtax

It would overburden me to have my piano lesson Thursday because I have so much homework on that day.

如果星期四有钢琴课会使我负担过重，因为那天我有太多的功课要做。

 

 

4. overestimate /ˌəʊvəˈestəˌmeɪt/

-- to make too high an estimate (rough calculation) of the worth or size of something or someone; overvalue

Joe overestimates the capacity of the bus when he thought it would hold 60; it has room for only 48.

乔高估了公共汽车的装载量，他以为能载60人，实际上只能载48人。

 

 

5. overshadow /ˌəʊvəˈʃædəʊ/

-- to cast a shadow over; be more important than; outweigh

Their gaieties were overshadowed by the sad news.

这不幸的消息使他们的欢乐蒙上了阴影。

 

 

6. overwhelm /ˌəuvəˈhwelm/

-- to cover over completely; overpower; crush

The department store guards were nearly overwhelmed by the crowds od shoppers waiting for the sale to begin.

百货商店的警卫几乎被成群等待大拍卖开始的购物者压倒。

 

 

7. overbearing /ˌəʊvəˈbeərɪŋ/

-- domineering over others;inclined to dictate

When the monior gave too many orders, the teacher scolded him for being overbearing.

当班长下太多命令时，老师责备他太专制了。

 

 

8. overconfident /ˈəuvəˈkɔnfidənt/

-- too sure of oneself; excessively confident

I was so sure of passing that I wasn't going to study, but Dad advised me not to be overconfident.

我确信不用学习就可及格，但父亲劝我别太自信。

 

 

9. overgenerous /ˌəʊvəˈdʒenərəs /

-- too liberal in giving; excessively openhanded

Because the service was poor, Mother thought Dad was overgenerous in leaving the waiter a 15% tip.

因为服务差，母亲认为父亲给侍者15%的小费太过大方。