50. tradition　 传统　 It is a good tradition to live simply and work hard.

traditional　 传统的　 a traditional custom　　 traditional chinese medicine　 中药

49. trade　 贸易，进行交易，贸易的　 international trade , a wholesale trade　 批发业　

go into trade　 经商　 in trade for　 trade sth with sth　　 trade her watch for his pen　

trade with Japan in tea

48. trace　 跟踪　 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　 坚韧的，难做的　 I find it a tough job.　　　 a tough man　 难对付的人

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

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

touch on 谈及　　 touch on the problem of higher costs

44. total　 总数总的 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.　 太过分了　 You can’t thank him too much. 再…也不过分

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

41. tongue　 舌头　 mother tongue / native language 母语