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If the weak reference has been cleared ( either because the referent has already been garbage collected or because someone called WeakReference. clear()), get() returns null.

如果弱引用被清除了（不管是referent已经被垃圾收集了，还是有人调用了WeakReference.clear（）），get（）会返回null。

Brevik served as Blizzard North's President while Roper and the Schaefers held Vice President positions.

Brevik曾是北方暴雪的总裁,而Roper和Schaefer兄弟曾任职副总裁.

One building is my waffle iron . Another is Mike Defeo's coffee pot.

一个建筑是我做华夫饼的烤具, 另一个是MikeDefeo的咖啡壶.

Agencia Efe A question for Pedro , how do you face this big challenge?

你如何面对这个巨大的挑战?

PEOPLE are sceptical about HUD , the federal Department of Housing and Urban Development.

人们对美国联邦政府住房与城市发展部(thefederalDepartmentofHousingandUrbanDevelopment)一直持有怀疑的态度.

At the beginning of World War II, Hitler invaded Poland without a declaration of war.

v.侵略反：defend在第二次世界大战开始之时，希特勒未经宣战便侵略波兰。

Susan Bassnett and Andre Lefevere regard this " cultural return " as " a momentous step " ( 1992: 4 ) in the field of translation studies.

(Lefevere& Bassnett,1992:4 ) 翻译不仅是语言的转换,更是文化信息的传递.

The American millionaire John D. Rockefeller gave some land to start Acadia National Park.

美国的百万富翁JohnD. Rockefeller把一些土地建造成阿卡迪亚国家公园.

A weak reference is a holder for a reference to an object, called the referent.

弱引用是对一个对象（称为referent）的引用的持有者。

He is always willing to enunciate his opinions on the subject of politics.

他总是愿意对政治问题发表意见.>enunciation/I9nQnsI5eIFn; I9nQnsI`eFEn/n[C,U].

X chromosome centromeric alpha satellite DNA variation in Klinefelter's syndrome patients and their parents

Klinefelter综合征及双亲X染色体着丝粒区α-卫星DNA变异研究

It would be nice if there was a way to be notified when the referent of a weak reference is garbage collected, and that is what reference queues are for.

如果有一种方法可以在弱引用的referent被垃圾收集时发出通知就好了，这就是引用队列的作用。

Our public relations people are attempting to whitewash the scandal involving our CEO.

我们的公关人员正在努力掩饰涉及公司董事长(注:CEO系ChiefExecutiveOfficer的缩写)的丑闻.

California Senator Diane Feinstein reflected on both the art and the commerce involved in filmmaking.

加州的参议员DianeFeinstein对于涉及电影制做的艺术和商业做了如下评论.

Through orthogonal experiment, the optimal conditions were given for producing extracellular BFA of Penicillium.

通过正交设计试验, 优化了青霉(Penicillium)属真菌SHZK-15产胞外布雷菲德菌素(Brefeld in-A,简称BFA)的液体发酵条件.

The LD 60 surface, which refects tiny specks of light, looks good in the sun.

该ld60表面上看, 这refects微小的斑点,轻, 看起来很不错在阳光下.

On the other hand, when you create a weak reference to an object, you do not extend the lifetime of the referent at all; you simply maintain an alternate way to reach it while it is still alive.

另一方面，在创建对一个对象的弱引用时，完全没有扩展referent的生命周期，只是在对象仍然存活的时候，保持另一种到达它的方法。

The Entry type, which is used to store the key-value mapping, extends WeakReference, so when expungeStaleEntries() asks for the next expired weak reference, it gets back an Entry.

用于存储键-值映射的Entry类型扩展了WeakReference，因此当expungeStaleEntries（）要求下一个失效的弱引用时，它得到一个Entry。

In the 1960s, the Defense Department's Advanced Research Projects Agency undertook a program called the ARPAnet.

20世纪60年代，国防部的高级研究计划署（Defense Department’s Advanced Research Projects Agency）开展了一个名叫ARPAnet的项目。

The return value will be the current reference count of the object.

返回值是当前对象的reference数量.

Both Efe and Reuters published their views on the course of events in Kosovo.

西班牙的埃新社和英国的路透社都对科索沃事态的发展发表了自己的看法.

Steve Feldman is an official with the Association of Zoos and Aquariums in Silver Spring, Maryland.

SteveFeldman是马里兰州西尔弗斯普林动物园与水族馆协会的官员.