Opportunity seldom knocks twice.
機不可失，失不再來。
英文諺語 3120 句（二） 第 209 部分

?? 句中詞匯解析

從本句中提取的重要詞匯

opportunity [?ɑp??tun?ti, -?tju-] 詞根: port
n. 機會;適當(dāng)?shù)臅r機良機;有利的環(huán)境，條件;
?? op=ob靠近 + portun=harbor港口+ ity 表名詞 → 向港口靠近 →機會
"He took the opportunity to deliver us another snub."
他借機再次冷落我們.
近義：instance, occasion, case, episode, event, happening 反義：hindrance, hitch, knot, misadventure, mishap, obstacle
twice [twa?s] 詞頻1 詞根: twi
adv. 兩次;兩倍;兩遍;
?? twi二，兩+ce副詞后綴，…次 →二次
"The ball bounced twice before he could reach it."
球彈了兩次他才接到。
近義：doubly, double
seldom ['s?ld?m] 詞頻1
adv. 很少，罕見;難得;不大;
"He had seldom seen a child with so much talent."
有如此天賦的孩子他以往沒見過幾個。
近義：infrequently, rarely 反義：manyfold, oft, often, oftentimes, repeatedly, usually
knocks
n. 短促的敲打（聲）( knock的名詞復(fù)數(shù) ); 爆震聲; 敲擊聲; 敲門（或窗等）聲\\nv. 敲, 擊, 打( knock的第三人稱單數(shù) ); （心）怦怦跳; 把…撞擊成（某種狀態(tài)）; 批評

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