People can also do double duty.

人们也可以双管齐下。

Now, if something does double duty is serves two purposes.

现在，如果某物有双重职责，就是有两个目的。

A double duty device, something even he wasn't sure that he could create.

他甚至都不敢相信自己发明了一个具备双重功能的设备。

For example, an exercise bike serves double duty if I can also dry my towels on it.

例如，如果我还可以在一辆健身自行车上擦干毛巾，它就具有双重功能。

Any device can be smart that is connected to the internet or they can do double duty.

任何连接到互联网的设备都可以是智能的，或者它们可以做双重任务。

It is also said to be poised to double import duties on a range of luxury goods.

政府还一并信誓旦旦的表示对一系列的奢侈品征收双倍的进口税。

So, ecologically, one species did double duty.

因此，从生态学角度来说，一个物种承担着双重职责。

It would have tires pull double duty as propellers that could reposition upward to take a car up, up and away.

作为螺旋桨，它可以让轮胎拉出双重任务，可以向上重新定位以便将汽车向上，向上和向外移动。

The expression " to do double duty" means to use something in two different ways.

“履行双重职责”一词意味着以两种不同的方式使用某些东西。

She planned meals for an entire week and each ingredient did double duty.

她计划了一整周的膳食，每种食材都有双重作用。

Paresh's mother made each ingredient that she bought from the store " do double duty" (duty).

Paresh 的母亲让她从商店购买的每一种食材都“履行双重职责”（职责）。

She wouldn't accept help, says Totenberg. She was doing double duty, caring for her dying husband and being a Supreme Court Justice.

“她不会接受帮助，”托滕伯格说。“她身兼两职，既要照顾垂死的丈夫，又要担任最高法院法官。”

So for me this is doing double duty as my paring knife and my little veg prep knife.

所以对我来说，这既是我的削皮刀又是我的小蔬菜准备刀。

And now new research finds that the visual cortex is constantly doing double duty—it has a role in processing not just sight, but sound.

而现在一项新的研究发现, 视觉皮层一直不间断地在负责双重功能—它但可以处理视觉图像还能负责声音部分。

They constructed terraces on the hillsides, a detail which served the double duty of providing flat land for farming and stabilizing the mountainside to guard against erosion and landslides.

他们在山边上建造阶地，阶地有两个用途，一是提供可以耕种的平地，二是稳定山体侧边来防止山体侵蚀和山体滑坡。

He's flashier than your average billionaire, with no qualms about risking his life in the pursuit of adventure… adventure that also often serves double duty as a completely out-of-the-box marketing strategy.

他比一般的亿万富翁更浮华，敢于冒着生命危险去追求冒险，而冒险通常也是一种完全不受限制的营销策略。

A lot of times people will put a pinch of salt in their cocktails, but this is kind of doing the double duty of the lemon and the salt.

很多时候人们会在鸡尾酒中放一小撮盐，但这是在做柠檬和盐的双重作用。

Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers.

一些植物排出有臭味的化学物质来驱赶昆虫。但其他一些植物却承担着双重职责。它们释放香气来吸引不同的昆虫，这些昆虫是攻击者的天敌。

" I don't mind telling you that she does now, at least I let her think so, it pleases her, you know. By–and–by we shall take turns, for marriage, they say, halves one's rights and doubles one's duties."

“我不介意告诉你现在是她，至少我让她这么以为——你知道，这让她很高兴。慢慢地我们会轮流坐庄，因为听人们说婚姻意味着权利均分，责任加倍。”

A double duty devolves on her; to educate them in the character of both father and mother; to form their principles and secure their property. But, alas! she has never thought, much less acted for herself.

她肩负着双重责任。教育他们父亲和母亲的品格；形成他们的原则并保护他们的财产。可惜！她从来没有想过，更没有为自己行动过。