adj. 1.习惯于〔作表语用〕。 2.〔美国〕用过的，用旧了的，半旧的；精疲力尽的。 短语和例子 used books 〔美国〕旧书。 used heat 废热，余热。 be used to 惯于 (be used to getting up early 习惯早起。be used to hard work 惯于吃苦耐劳)。 get [become] used to 变得习惯于。 used up 1. 〔美国〕筋疲力尽的，疲劳不堪的。 2. 用完了的；〔美国〕被杀死了的，已阵亡的。 vi. 〔用法同助动词，其后的不定式表示过去多次发生的动作〕常常，经常，往往。 I used to go there. 我(以前)常到那里。 He does not come as often as he used (to). 他不像从前那样常来了。 What used he to say - He used not to answer. 他向来怎么讲？ --他向来不回答。 It used to be said that ... 过去(人家)常说…。 There used to be a house here. 原来这里是有一幢房子的。 Used there to be swallows here 这里是否一向都有燕子？ ★口语或美国用法说作 Did there use to ...
employed in accomplishing something; "the principle of surprise is the most used and misused of all the principles of war"- H.H.Arnold & I.C.Eaker
previously used or owned by another; "bought a secondhand (or used) car" 同义词：secondhand,
of persons; taken advantage of; "after going out of his way to help his friend get the job he felt not appreciated but used" 同义词：exploited, ill-used, put-upon, victimized, victimised,
例句与用法
1.
Acids used in pickling can include sulfuric . 酸浸渍中用的酸有硫酸。
2.
He was of no use at all in the business . 他在业务上一点用场也没有。
3.
He used to fight at the drop of a hat . 他总是一看到信号就大打出手。
4.
What was the use of telling the whole ? 把一切都说出来，有什么用呢？
5.
When hard tactics failed , soft methods were used . 硬的不行来软的。
6.
She uses rather dated words and phrases . 她使用的词语未免太陈旧了。
7.
More expensive nitrating agents may be used . 还可应用较贵的硝化剂。
8.
The colors used are flat and unvaried . 使用的颜色既单调又千篇一律。
9.
We pump water from the well for daily use . 我们从井里抽水以供日用。
10.
Why use wood when you can use plastic ? 既然能用塑料，何必非用木料？
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