War may sometimes be a necessary evil. But no matter how necessary, it is always an evil, never a good. We will not learn how to live together in peace by killing each other's children.
📚 名句词汇解析
从本句名言中提取的重要词汇，帮助你深度理解这句话
adv. 有时，间或;时而;
💡 sometime某一时间的+s表副词 →有时
"Even friends disagree sometimes."
即便是朋友有时也有分歧。
近义：occasionally, oft, once, rarely, betweentimes, betweenwhiles
反义：invariably, periodically, repeatedly, steadily, usually, consistently
adj. 必要的;强制的;必然的;不可避免的;
n. 必需品;
💡 necess必要 + ary 表示有...性质的， → a.必要的；必然的
"Vitamin D is necessary to aid the absorption of calcium from food."
从食物中吸取钙需靠维生素D的帮助。
近义：indispensable, inevitable, mandatory, needful, obligatory, obliged
反义：needless, pointless, profitless, purposeless, redundant, reiterative
adj. 邪恶的，罪恶的;有害的;不幸的，不吉的;品行坏的;
n. 邪恶，罪恶;坏事，恶行;邪恶的力量、势力或化身;灾祸;
💡 e 加强或引申意义、使…+vil =base （卑劣的） → n.邪恶；祸害 a.坏的
"the evil effects of racism"
种族主义的恶劣影响
近义：ill, infirmity, malady, complaint, affection, disease
反义：goodness, humane, kind, kindhearted, kindly, loyal
n. 事件;（讨论、考虑等的）问题;重要性;物质;
vi. 要紧，重要;化脓;有重大影响;有重要性;
"Now we come to the crux of the matter ."
现在我们来谈问题的症结。
近义：import, signify, weigh, count, amount, issue
vt.& vi. 学习，学会;习得;得知;记住;
vt. 记住;学习;得知;认识到;
vi. 学习;获知;
💡 学习好才能挣钱(earn)
"Children must learn socially acceptable behaviour."
儿童必须学会社会上认可的行为举止。
近义：know, acquire, develop, find, realize
反义：forget
vi. 生存;居住;生活，过活;在生活中得到享受;
vt. 经历;度过;
"We cannot live without water."
没有水我们不能生存。
近义：last, reside, be, sojourn, subsist, dwell
反义：perish, vanish, part, croak, decease, depart