We ought not to look back unless it is to derive useful lessons from past errors, and for the purpose of profiting by dear-brought experience.
📚 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
vt.& vi. 得到，导出;源于，来自;（从…中）提取;
💡 de离开+riv河流+e →派生，得出
"Females and cubs clearly derive some benefit from living in groups."
雌兽与幼崽显然受益于群居.
近义：infer, deduce, deduct, draw, educe, excogitate
反义：originate, procure, produce, provoke, rouse, cause
adj. 有用的，有益的，有帮助的;令人满意的;
💡 use用+ful可…的” →有用的
"The memory expansion cards are useful adjuncts to the computer."
内存扩充卡是计算机很有用的附件。
近义：helpful, assistive, available, profitable, purposive, serviceable
反义：idle, inane, ineffective, insignificant, lousy, needless
n. 意志;目的;作用;（进行中的）行动;
vt. 有意;打算;企图（做）;决意（做）;
💡 pur始终+pose放→始终放的东西→目的，意图
"We spoke to little purpose — his mind was clearly made up already."
我们说的话几乎不起作用,他显然已下定决心了.
近义：intend, consider, appoint, ascribe, denote, designate
n. 经验，体验;经历，阅历;
vt. 亲身参与，亲身经历;感受;发现;
💡 ex出+per尝试+ience名词后缀→尝试出来的东西→经验
"Salary will be commensurate with experience."
薪金将会与资历相称。
近义：career, tradition, undergo, savvy, skill, expertise
反义：inexpertness, rawness, unskillfulness, callowness
vt.& vi. 看，瞧;
vi. 注意;面向;寻找;看起来好像;
n. 看;（尤指吸引人的）相貌;眼神;样子;
int. （插话或唤起注意）喂，听我说;
💡 l(棍)+oo(双眼)+k(开):挣开双眼搜索棍- 看
"That uniform makes the guards look absurd."
警卫们穿着那种制服看起来怪模怪样的。
近义：appear, seem, see, appearance, image, area
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
"Water allotments to farmers were cut back in the drought."
在干旱时期配给农民的水量减少。
近义：second, support, endorse, illustrate, document, backtrack
反义：impel, inch, save, loop, sheer, slew