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Lesson 84
第84课
cautious
adj.谨慎的
He was even more cautious than ever, and did his utmost to win the trust and favor of the superior.
他更加谨小慎微， 兢兢业业， 以尽力取信讨好其上司。
emergency
n.紧急
I keep a box of tools and a fire extinguisher in my car for use in an emergency.
我在车中放了工具箱和灭火器，以备紧急之需。
keen
adj.锐利的
Be careful with that knife. It's got a keen edge.
小心那把刀子，他有锐利的锋刃。
scent
n.气味
My dog snuffed the scent of games.
我的狗闻到了猎物的味道。
sink
v.下沉
The sun is sinking in the west.
太阳正西下。
doubt
n.疑虑
There is no doubt whatever about it.
关于这一点， 没有任何疑问。
excuse
v.原谅
Please excuse me for opening your letter by mistake.
请原谅我错拆了你的信。
moderate
adj.一般的
Both are moderately large insects, with a wingspan of about four centimeters.
这两只都是中等大小的昆虫，翼幅大约为四厘米。
progress
n.进步 v.进展
He is showing rapid progress in his studies.
他的学业正迅速进步中。
scheme
v.图谋
The bride's family was scheming to prevent a wedding.
新娘的家人在密谋阻止婚礼。
dis
置于单词前表示“不，消失掉”
dislike
不喜欢（dis+like不喜爱）
disorder
无秩序（dis+order没有顺序）
disappear
消失（dis+appear消失）
