31.claim for sth要求，如：
Claim for delayed delivery 延誤交貨索賠
Claim for inferior quality 由于質(zhì)量低劣而索賠
32.collision with sb/sth碰撞,沖突，如：
His car had a collision with a truck. 他的車子興貨車相撞。
Their minivan was in collision with an Army lorry. 他們的小貨車興軍用卡車相撞。
33. comment on /about對(duì)……的評(píng)論，如：
What’s your comment on our operas?你對(duì)京劇的評(píng)價(jià)怎樣?
Many customers have high comment on it. 許多顧客對(duì)此商品的評(píng)價(jià)很高。
34.connection between; 關(guān)系,連接，如：
The connection between the two events is remote. 這兩件事之間沒有什麼聯(lián)系。
35. complaint of /about 報(bào)怨,控告，如：
I have a complaint of the chest. 我胸部不適。
Accept complaint about damage 接受貨損抱怨
36. compromise between/on 折中,妥協(xié)，如：
Progress has been made towards a political compromise between the two nations. 兩國(guó)之間的政治和解已經(jīng)取得進(jìn)展。
The final proposals were a rather unsuccessful compromise between the need for profitability and the demands of local conservationists.
最終的方案是受益者和地區(qū)自然資源保護(hù)者之間頗為勉強(qiáng)的相互妥協(xié).
37.concentration on sth專心,集中精力，如：
Too much concentration on one aspect of a problem is dangerous. 過度專注于問題的一面是危險(xiǎn)的。
Concentration of emotional energy on an object or idea. 聚精會(huì)神精神集中于某物或某種想法上
38. concentration of sth 集中,聚集，如：
Having a high concentration of acid. 酸性的含高濃度酸的
They strongly recommended concentration of offer. 他們極力建議集中報(bào)盤。
39. concern about/for/over擔(dān)心，如：
There was also concern about the adaptation of laws exercise. 人們也非常關(guān)心關(guān)於法律適應(yīng)化的工作。
40.confidence in 對(duì)……的信任,相信，如：
I have complete confidence in them. 我對(duì)他們完全有信心。
He inspired confidence in us. 他使我們獲得了信心。