Opportunity seldom knocks twice.
机不可失，失不再来。
英文谚语 3120 句（二）
第 209 部分
📚 句中词汇解析
从本句中提取的重要词汇
n. 机会;适当的时机良机;有利的环境，条件;
💡 op=ob靠近 + portun=harbor港口+ ity 表名词 → 向港口靠近 →机会
"He took the opportunity to deliver us another snub."
他借机再次冷落我们.
近义：instance, occasion, case, episode, event, happening
反义：hindrance, hitch, knot, misadventure, mishap, obstacle
adv. 两次;两倍;两遍;
💡 twi二，两+ce副词后缀，…次 →二次
"The ball bounced twice before he could reach it."
球弹了两次他才接到。
近义：doubly, double
adv. 很少，罕见;难得;不大;
"He had seldom seen a child with so much talent."
有如此天赋的孩子他以往没见过几个。
近义：infrequently, rarely
反义：manyfold, oft, often, oftentimes, repeatedly, usually
n. 短促的敲打（声）( knock的名词复数 ); 爆震声; 敲击声; 敲门（或窗等）声\\nv. 敲, 击, 打( knock的第三人称单数 ); （心）怦怦跳; 把…撞击成（某种状态）; 批评