VOA精听1500基础单词及例句：U开头单词英英释义及例句

【under】(1) below; (2) below the surface of; (3) less than; (4) as called for by a law, agreement or system.

* The river flows under the bridge. (1)
河水在桥下面流动。

* The submarine went under. (2)
潜水艇沉没了。

* The book was under 20 dollars. (3)
这本书不到20美元。

* Such action is not permitted under the law. (4)
这样行动不被法律允许。

【understand】(1) to know what is meant; (2) to have knowledge of.

* I understand what you mean. (1)
我懂得你意思是什么。

* He understands chemistry. (2)
他理解化学。

【unite】to join together.

* The new president will try to unite all parties in support of his program.
新总统将努力结合各党派来支持他的计划。

【universe】all of space, including planets and stars.

* Do you know why the universe is expanding?
你知道为什么宇宙膨胀吗?

【university】a place of education that usually includes several colleges and research organizations.

* Her sons are students at different universities.
她的儿子们是不同大学的学生。

【unless】(1) except if it happens; (2) on condition that.

* I will not go, unless the rain stops. (1)
我不会去，除非雨停。

* I will come to your house unless it rains. (2)
如果不下雨我就去你家。

【until】(1) up to a time; (2) before.

* She said she would wait for me until three o'clock. (1)
她说她会等我到三点为止。

* We cannot start until everyone arrives. (2)
我们要等到全部人到齐再开始。

【up】to, in or at a higher position or value.

* We will walk up the stairs.
我们将上楼。

【urge】(1) to advise strongly; (2) to make a great effort to get someone to do something.

* He urged the governor to think carefully before signing such a bill. (1)
他督促州长在签署法案之前要仔细考虑。

* The speaker urged the crowd to take control of the university. (2)
演讲者怂恿一伙人控制大学。

【urgent】needing an immediate decision or action.

* She said urgent action is necessary.
她说紧急行动是必要的。

【us】(1) the form of the word "we" used after a preposition; (2) or used as an object of a verb.

* He said he would write to us. (1)
他说他会写信给我们。

* They saw us yesterday. (2)
他们昨天看见我们了。

【use】(1) to employ for a purpose; (2) to put into action.

* We use electricity to light our house. (1)
我们用电来照亮我们的房子。

* He used a piece of glass to cut the ropes that tied our hands. (2)
他用一片玻璃切断了绑住我们手的绳子。

【usual】(1) as is normal or common; (2) as is most often done, seen or heard.

* They watched all the usual television shows. (1)
他们看过了所有通常的电视节目。

* We left for work at our usual time. (2)
我们在通常的时间上班。

leave for：到...去，出发前往