1.
a modern-day proBlem unknown in earlier times.
![点击朗读](/dictall/images/read.gif)
在从前不为人所知的现代的问题
2.
To keep oneself or one's plans hidden.
![点击朗读](/dictall/images/read.gif)
隐匿使自己或自己的计划不为人所知
3.
"The Best-known are syphilis, gonorrhea, AIDS, and herpes simplex."
![点击朗读](/dictall/images/read.gif)
最为人所知的性传染病有梅毒、淋
4.
The science of intoning was unknown.
![点击朗读](/dictall/images/read.gif)
吟诵的学问还不为人所知。
5.
A member of the indigenous or earliest known population of a region.
![点击朗读](/dictall/images/read.gif)
土著人一地区原始的或最早为人所知的人
6.
To make an idea understood is to get it across.
![点击朗读](/dictall/images/read.gif)
要使一种想法为人所知就是要人理解它。
7.
Surrounding the earth is a layer of air of unknown thickness.
![点击朗读](/dictall/images/read.gif)
环绕地球的是一层空气,其厚度尚未为人所知。
8.
(used of information or news) kept secret by using influence.
![点击朗读](/dictall/images/read.gif)
(用来指消息或者新闻)利用权利使得不为人所知。
9.
When one has a wide range of knowledge, one can then know the mandate.
![点击朗读](/dictall/images/read.gif)
知天所为,知人所为,然后知道,知道然后知命。
10.
make known or acquainted.
![点击朗读](/dictall/images/read.gif)
为别人所了解或熟知。
11.
His name was unknown to the world.
![点击朗读](/dictall/images/read.gif)
他的名字不为世人所知。
12.
Well, Holland is famous for its tulips and windmills.
![点击朗读](/dictall/images/read.gif)
嗯,荷兰以郁金香和风车为人所熟知。
13.
many of the best known edible crabs.
![点击朗读](/dictall/images/read.gif)
为人所熟知的可食用的螃蟹。
14.
The music is known very well by people.
![点击朗读](/dictall/images/read.gif)
而这些曲调为人们所熟知,
15.
clever Dick;( infml derog )person who thinks he is always right or knows everything
![点击朗读](/dictall/images/read.gif)
口,贬)自以为一贯正确或无所不知的人
16.
It was erected before the time of living memory.
![点击朗读](/dictall/images/read.gif)
它建造的时间为人所不知。
17.
Curling is another sport that is not as well known.
![点击朗读](/dictall/images/read.gif)
冰壶是另一项不为很多人所知的运动。
18.
A man is know by the company he avoid.
![点击朗读](/dictall/images/read.gif)
看他所避的朋友,就可知其为人。