人教,高中英语,选修七,单词,助记,第四单元B7U4-A1、The postage for airmail is 50 cents.一封航空信的邮资是五十美分。2、It's a fortnight to National Day.离国庆节还有两星期。3、I shall defer replying till I hear from home.我将等接到家信以后再给你答复。4、Why am I dy...

Libido (n.): psychic energy generally；specifically，a basic form of psychic energy，comprising the positive。loving instincts manifested variously at different stages of personality development欲望lucrativ...

词汇(Vocabulary)libido (n.) : psychic energy generally；specifically，a basic form of psychic energy，comprising the positive。loving instincts manifested variously at different stages of personality develo...