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assure
vt.向（某人）保证
I can assure you that this is the best restaurant in town.
我向你保证，这是城里最棒的一家餐厅。
Sam wasn't able to assure her of his support.
山姆无法向她保证要支持她。
assurance
n.保证；自信，把握，胸有成竹
Tom gave me his assurance that he would show up on time.
汤姆向我保证他会准时出现。
In spite of all her assurances, Jane did not do the job as promised.
虽然阿珍信誓旦旦，却未做到她所承诺过的工作。
"John will like that," Lisa said with assurance.
丽莎胸有成竹的说：“约翰一定会喜欢的。”
timid
a.胆小的
The timid boy rarely speaks up in class.
这个胆怯的男孩在班上很少开口说话。
tend
vi.倾向，易于（之后接不定式短语） vt.照顾
We tend to take natural resources for granted nowadays.
现今，我们往往将自然资源视为理所当然。
Mary tended the shop for her father while he was sick.
父亲生病时玛丽替他父亲看店。
tendency
n.倾向
Henry has a tendency to look at the ground when he is telling a lie.
亨利说谎时往往会看地面。
device
n.装置；设计
This machine has a safety device.
这台机器有一个安全装置。
The girl on the magazine cover is a device to get everyone's attention.
杂志上的封面女郎是用来引起大家注意的一种设计。
devise
vt.发明，想出；设计
For safety's sake, we'll have to devise a new secret code.
为了安全起见，我们必须想出一个新的密码。
It is necessary that we devise a new system to improve our productivity.
我们有必要设计一个新制度以提升我们的生产力。
gear
n.装备（不可数）；齿轮（可数）
Uncle George spent a lot of money on his fishing gear.
乔治叔叔花了很多钱在钓鱼的装备上。
The gears can trasmit force from one machine to another.
齿轮可以把动力从一个机器传到另一个机器。
council
n.议会
Rita sent an e-mail to the council to complain about air pollution.
丽塔寄了封电子邮件给议会，抱怨空气污染一事。
The City Council met every day last week to disscuss how to cut down on water pollution.
上星期市议会每天都开会讨论减少水污染之道。
concept
n.观念，想法
It is difficult to grasp some of the concepts in Buddhism.
有些佛学的观念很难理解。
