half: n. (pl. halves ) 1.半,一半;一部分。 ...astern: adv. 1.【航?!吭诖琜機]尾,向船[機]尾。 2. ...both: adj. 兩,雙,雙方,兩面,二者。 both time ...half astern both engines!: 雙退二half astern: 半速倒車; 半速后退; 后退二full astern both engines!: 雙退三slow astern both!: 雙車后退一slow astern both engines!: 雙退一half astern port!: 左車后退二左車后退二!左退二half astern starboard!: 右車后退二右車后退二! 右退二half speed astern: 半速倒車half turn astern: 倒車抵制前進half ahead both engines!: 雙進二half ahead both!: 雙車前進二astern: adv. 1.【航海】在船[機]尾,向船[機]尾。 2.在后,向后。 ship next astern 后續(xù)艦。 astern of 在…的后面。 back astern 倒駛。 drop [fall] astern 落在別船后頭,被趕過。 Go astern! 后退!〔口令〕。 astern of: 在...的后面both: adj. 兩,雙,雙方,兩面,二者。 both times兩次。 both sides 雙方。 both these books這兩本書。 both (the) brothers兄弟二人。 both his hands 兩手。 B- girls are beautiful. 兩個姑娘都漂亮。 I don't want both books. 我不是兩本書都要〔只要其中一本〕。 have it both ways (在議論中)忽左忽右〔以自相矛盾的觀點作為論據(jù)〕。 not both 一面,單獨。 pron. 兩者,二者,雙方。 B- are dead. 這兩人都死了。 both of them 他們雙方,兩者都。 B- of the girls are beautiful. 兩個姑娘都漂亮。 They were scientists both. 雙方都是科學(xué)家〔both 與 they 同格〕。 I don't know both. 我不是兩個人都認(rèn)識〔只認(rèn)識其中之一〕。 adv. 皆,哪個都;并且,兼,又〔用在有and 連接的二個以上詞句前,與neither...nor 正相反〕。 B- brother and sister are dead. 哥哥和妹妹都死了。 It is both good and cheap. 它又便宜又好,它價廉物美。 She can both sing and dance. 她又會唱歌又會跳舞,她能歌善舞。 both before the war and during the war 無論在戰(zhàn)前還是在戰(zhàn)時。 both Chaucer and Shakespeare and Milton 無論是喬塞、莎士比亞還是彌爾頓。 both a and: 和都; 既...又both… and: 既…又; 連接的并列主語both… and …: 既…又both…not…: 不都是……(部分否定)not both: “與非”門not both=both not: 并非兩個都.ahead and astern: 倒順車; 正倒車astern attack: 后半球攻擊