Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？
新概念英语第四册
Lesson 42 Recording an earthquake
📚 句中词汇解析
从本句中提取的重要词汇
n. 火车;行列;一系列相关的事情; 拖裾;
v. 训练;教育;培养;修整;
💡 train(draw)→教养；训练；列车；行列；导火线
"The train went slower and slower until it stopped altogether."
火车愈来愈慢，最后完全停了。
近义：illustrate, instruct, master, prepare, qualify, raise
n. 起立，站立;身份，地位;持续时间;
adj. 长期有效的;直立的;固定的;
v. 站立;坚持不变;
"Who's the girl standing behind Jan?"
站在简身后的女孩是谁？
近义：name, renown, reputation, repute, status, fame
反义：shame, unpopularity, belittling, dishonourableness, dishonouring, disgrace
vt. 照料，照顾;护理;照管，管理;
vi. 倾向（于），趋向（于）;伺侯，招待;关心;注意;
💡 十(ten)只鹿(d)需要 照管
"The girls in a class tend to have a civilizing influence on the boys."
班上的女生往往能让男生文雅起来。
近义：trend, gravitate, serve, assist, nurse, attend
v. 落下;跌倒;减少;沦陷;
n. 落下;瀑布;秋天;减少;
💡 所有的(all)的树叶落下(fall)来,秋天(fall)到了 网友：wangqidong 补充：(f)风把(all)所有的树叶吹下来，秋天(fall)到了
"Several factors have been adduced to explain the fall in the birth rate."
有几个因素已被援引来说明出生率降低的原因。
近义：plonk, slump, decline, decrease, descend, diminish
反义：arise, ascend, peak, stand, tower, uprise
adj. 突然的，未预见到的;急躁的，仓促的;快的，迅速的;急剧;
💡 傻等（谐音）：事太 突然，让你傻等 速(su)打(d)倒(d)恩(en)人，太 突然
"She was totally bewildered by his sudden change of mood."
他的情绪突变搞得她全然不知所措。
近义：hurried, abrupt, lightning, precipitant, precipitate, precipitous
反义：stepped, probable, expectable, expected