50. tradition　 傳統(tǒng)　 It is a good tradition to live simply and work hard.

traditional　 傳統(tǒng)的　 a traditional custom　　 traditional chinese medicine　 中藥

49. trade　 貿(mào)易，進行交易，貿(mào)易的　 international trade , a wholesale trade　 批發(fā)業(yè)　

go into trade　 經(jīng)商　 in trade for　 trade sth with sth　　 trade her watch for his pen　

trade with Japan in tea

48. trace　 跟蹤　 trace the thief to his nest　　 trace the river to its source

47. tour　 巡回演出　 be on tour　　 make a tour of U.S.A　

46. tough　 堅韌的，難做的　 I find it a tough job.　　　 a tough man　 難對付的人

45. touch 觸碰，涉及　　 keep in touch with　　 get in touch with　

觸動，感到　 What he said touched me.　 be touched by = be moved by　

touch on 談及　　 touch on the problem of higher costs

44. total　 總數(shù)總的 Add these numbers together and tell me the total. The total came to $5,000.

What is total cost of these books.　 in total = in all　 In total, there must have been 2,000 people.

totally　 完全地　 The story is totally false.

43. a top student　　 at the top of one’s voice　　 on top of the world　 非常幸福

42. This time he has gone too far.　 太過分了　 You can’t thank him too much. 再…也不過分

much too　　 too much　　 too…to　　　 only too…to　 I am only too glad to meet you.

41. tongue　 舌頭　 mother tongue / native language 母語