1.
The Study of Some Problems for Weakly Recurrence of Markov Chains in Random Environments;
关于随机环境中马氏链的弱常返性等若干问题的研究
2.
After he came back from the war, he was a mere shadow of the man he used to be.
从战场返回后,他就衰弱得不成样子。
3.
I am weak. I am weak, very weak.
我比较柔弱。 我是柔弱的，非常柔弱的。
4.
Our usual walk was to or from the subway,
我们常常往返于地铁站的那段路上，
5.
and it is common practice for people to go back to school from time to time,
人们时常返回学校学习，这已成为常事，
6.
Solids may often be represented by backmix flow.
固体颗粒常常可以表示为返混流。
7.
Often the two men came to a dead end and had to start all over again.
他们俩常常陷入绝境，不得不重新返工。
8.
And this made her exceedingly sick.
这样一来，使她非常虚弱。
9.
I feel absolutely rotten .
我觉得身体非常虚弱。
10.
The attack of flu left her feeling very groggy.
她患流感後非常虚弱.
11.
impairment of normal physiological function affecting part or all of an organism.
正常生理功能的削弱。
12.
The strong usually dominate over the weak.
强者通常控制弱者。
13.
anomalous trichromatism
色弱,反常三原色性
14.
He is very slightly built.
他的体格非常瘦弱。
15.
The strong usually dominate the weak.
强者通常统治弱者。
16.
He is a nighthawk, always hanging around in the night clubs.
他是个夜游神，常在夜总会流连忘返。
17.
a commuter who uses public transportation.
利用公共交通运输条件的经常往返者。
18.
Neither be there any man know to have returned from the grave .
人归坟墓寻常事，墓中返回无一人。