介绍： psychological
adj. 心理的；心理学的；精神上的
It was very important psychologically for us to succeed.
取得成功，在心理上对我们非常重要。

pump
vt. 打气；用抽水机抽…
n. 泵，抽水机；打气筒
vi. 抽水
There was no water in the building, just a pump in the courtyard.
楼里没水，只在院子里有个水泵。

purchase
n. 购...

介绍： psychological
adj. 心理的；心理学的；精神上的
It was very important psychologically for us to succeed.
取得成功，在心理上对我们非常重要。

pump
vt. 打气；用抽水机抽…
n. 泵，抽水机；打气筒
vi. 抽水
There was no water in the building, just a pump in the courtyard.
楼里没水，只在院子里有个水泵。

purchase
n. 购买；紧握；起重装置
vt. 购买；赢得
vi. 购买东西
He purchased a ticket and went up on the top deck.
他买了张票，上了顶层。

quantity
n. 量，数量；大量；总量
After some initial problems, acetone was successfully produced in quantity.
解决了最初的一些问题后，成功地生产出了大量丙酮。

questionnaire
n. 问卷；调查表
Teachers will be asked to fill in a questionnaire.
教师们将被要求填写一份调查问卷。

random
adj. [数] 随机的；任意的；胡乱的
n. 随意
adv. 胡乱地
The survey used a random sample of two thousand people across the Midwest.
这项调查使用的是对中西部地区2000人的随机取样。

recommend
vt. 推荐，介绍；劝告；使受欢迎；托付
vi. 推荐；建议
I just spent a holiday there and would recommend it to anyone.
我刚在那儿度过一个假期，愿意向任何人推荐那里。

register
v. 登记；注册；记录；挂号邮寄；把…挂号；正式提出
n. 登记；注册；记录；寄存器；登记簿
Have you come to register at the school?
你到学校来注册过了吗？

regulate
vt. 调节，规定；控制；校准；有系统的管理
We must try our best to regulate our expenditure.
我们必须尽力控制开支。