Over 21,000 aircraft are in use; a new plane is delivered every five hours.

正在投入使用的飞机超过2.1万架；每5小时就有一架新飞机交付。

How about some interesting facts – like approximately how many words are in use in the English language?

说些有趣的事实，怎么样？比如英语中大约有多少个单词在使用？

How about some interesting facts-like approximately how many words are in use in the English language?

一些有趣的事实怎么样——比如英语中有大约多少单词在使用呢？

The ones that are in use are the mess.

正在使用的都是一团糟。

More than 100 of the Beewise systems are in use in the US and Israel.

超过100个Beewise系统在美国和以色列使用。

The ones that are neat and tidy are not the ones that are in use.

那些整齐的并不是正在使用的。

Only a few are in use, and they are all operated by specialized heavy-lift companies.

只有少数在使用中，并且全部由专业的重型起重公司运营。

We are monitoring the drugs that are in use to make sure that they work well and users use them well.

我们正在研发新药。我们监测药物以确保起到很好的效果, 而且患者们也能够很好的使用。

The agency added they do not have to report how far those vehicles traveled, or when the systems are in use.

该机构还表示，他们不必报告这些汽车的行驶里程数以及使用该系统的时间。

You'll wanna be able to say celsius or fahrenheit depending on which segment of measurement the country you are in uses.

您将希望能够说摄氏度或华氏度，具体取决于您所在国家/地区使用的度量单位。

Social media is a great place to pick up words and expressions that are in use, even though they're not in the dictionary.

社交媒体是一个获取正在使用的单词和表达的好地方，即使这些词不在字典里。

To make conversation we need words-so according to the Oxford English dictionary, approximately how many words are in use in the English language?

为了进行对话，我们需要单词——那么根据牛津英语字典，英语中有大约多少单词在使用呢？

To make conversation we need words – so according to the Oxford English Dictionary, approximately how many words are in use in the English language?

为进行对话，我们需要单词——所以根据《牛津英语词典》，英语中大约有多少个单词在使用？

13. When RADAR, ARPA and other positioning systems are in use, does the use of these apparatus relieve your duty of lookout as a watchkeeper?

13. 当使用RADAR、ARPA等定位系统时，这些设备的使用是否可以减轻您作为值班员的瞭望职责？

As it sells more gadgets—over 1 billion devices are in use—it can also sell content and services, and gain revenue from music, its app store and more.

现今有超过十亿的终端正在使用苹果产品，由于苹果卖出的产品越来越多，它同时也可以出售更多服务业务及服务内容，在音乐服务，应用商店以及更多领域中获得收益。

Since relatively few industrial robots are in use in the American economy, the total job loss from robotisation has been modest: between 360,000 and 670,000.

因为美国经济中使用的工业机器人相对来说非常少，所以因使用机器人而减少的岗位也比较少，总数在36万至67万之间。

How our cities are made and the infrastructure and policies that are pushed through are hugely important in determining how efficient we are in using resources.

我们的城市是如何建造的，以及所推行的基础设施和政策对于决定我们使用资源的效率非常重要。

Firms have long known that only about half of all desks are in use at any moment, as employees work odd hours or disappear to meetings, but it was difficult to fill the spares.

许多公司很早就知道，由于雇员要倒班或者去开会，大约只有一半的办公桌一直处于使用状态，但是很难填补那些办公桌闲置的空当。

So sadly, we're seeing you know a lot of wartime type wounds with high caliber ammunition, and yeah, so that's exactly right some of the lessons are in that we've used in the mass shootings here in the united states.

可悲的是，我们看到很多战时使用高口径弹药的伤口，我们在美国的大规模枪击事件中吸取了一些经验教训。