Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer.
作出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。
新概念英语第三册 Lesson 42 Modern cavemen

📚 句中词汇解析

从本句中提取的重要词汇

sort [sɔrt] 词频1
n. 分类，类别;品质，本性;方法;一群; vt.& vi. 分类;整顿，整理;适合; vt. 挑选;把…分类;将…排顺序; vi. 分类;交往;协调;
💡 sort(kind)→种类；分类；整理；拣选
"You can't see in this light, but my new coat is a sort of brownish colour."
这种光线下你看不清楚，其实我的新外衣带棕色。
近义：arrange, order, organise, organize, pigeonhole, range 反义：jumble, mess, muss, shuffle, tousle, upset
necessary ['nɛsəsɛri] 词频1 词根: necessar
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
impossible [ɪm'pɑsəbl] 词频1 词根: im
adj. 不可能的，做不到的;难以忍受的;不会有的，不能相信的; n. 不可能;不可能的事;
💡 im不，无，非+possible可能的→不可能的
"She was such a contrary child—it was impossible to please her."
这孩子老跟人作对，没法让她高兴。
近义：impracticable, unachievable, unattainable, unfeasible, unreachable, unrealizable 反义：approachable, incidental, likely, obtainable, attainable, open
nature ['netʃɚ] 词频1 词根: 出生
n. 自然;天性;天理;类型;
💡 nat出生的+ure状态→出生状态→天性
"the adversarial nature of the two-party system"
两党制的对抗性
近义：milieu, surroundings, circumambiency, medium, ecosystem, environment
confront [kən'frʌnt] 词频3 词根: con
vt. 面对;使面对面，使对质;碰到，遇到;比较;
💡 con共同+front前额→互相面对→对抗，面临
"Counsellors encourage victims of crime to confront their emotions."
辅导员鼓励罪案受害人直面自己的情感.
近义：outbrave, run, tackle, brave, breast, face 反义：parry, avert, prevent, shirk, shun, sidestep

📚 更多「新概念英语第三册」例句

Of course, New York is the ideal place for such an interesting study, because there is no shortage of tall buildings.
当然，纽约是进行这种有趣的试验的一个理想的地方，因为那里根本不缺乏高楼大厦，有的是高层的窗槛从上往下坠落。
The first thing I saw when I entered the art gallery was a notice which said:
走进展厅首先看到的是一张告示，上面写着
It weighed nearly 500 pounds.
重达500磅左右。
What they had in fact found was a ship which had been sunk many years before.
事实上，他们发现的是另一艘沉没多年的船。
Though Mrs.Busssman fully acquainted with this story, she thought that there was a chance in a million that she might be right.
尽管巴斯曼夫人熟知这个情况，但她仍然认为自己的想法仍有百万分之一的可能性。
you have the choice of very expensive organically-grown vegetables or a steady diet of pesticides every time you think you're eating fresh salads and vegetables, or just having an innocent glass of water!
或是选用价格昂贵、有机培植的蔬菜，或是当你认为在享用新鲜色拉和新鲜蔬菜或饮用一杯无害的水的时候，实际上每次都不断吃进杀虫剂。