pledge: n. 1、a serious promise;2、a sum of money or sth valuable that you leave with sb to prove that you will do sth or pay back money that you owe;v. to formally promise to give or do sth;
aviation: n. the designing, building and flying of aircraft;
rarity:n. a person or thing that is unusual and is therefore often valuable or interesting;
pledged investment:合同投資,允諾投資
strength:n.強項,優(yōu)勢
literature:n. 印刷廣告,產(chǎn)品宣傳資料
advisable:adj.最好的
dead tree:紙質(zhì)的
imperative:adj.極其重要的,必要的,命令式的
discourteous:adj. 不禮貌的,失禮的,粗魯?shù)?/p>
small talk:閑聊
audio-visual aids:視聽設(shè)備,視聽教具
verbal agreement:口頭約定,口頭協(xié)議
pasta:n.意大利面食
alternatively:adv.或者