Bicycle use was not included in the study but Newman noted that the two most "bicycle friendly" cities considered—Amsterdam and Copenhagen—were very efficient.

这项研究不包括自行车的使用，但是 Newman 注意到两个“对自行车最友好”的城市——阿姆斯特丹和哥本哈根——被认为是非常有效率的。

youdao

By the 16th century, a pendulum clock had been devised, but the pendulum swung in a large arc and thus was not very efficient.

到了16世纪，人们发明了摆钟，但钟摆摆动的幅度很大，因此效率不高。

youdao

I've not seen this done, but it could be very efficient if done well.

我没有看到过这样的实现，但是如果能够实现将是非常有效。

youdao

But new tests years later found that it was not very efficient.

VOA: special.2010.02.01

Now, the other nice thing about viruses is not only are they very efficient but most viruses are specific for certain kinds of cells.

病毒的另一个绝妙之处在于,它们不仅高效,对特定细胞的特异性也很好

耶鲁公开课 - 生物医学工程探索课程节选

Both propulsion systems produce only small amounts of thrust but are very efficient in terms of how much "propellant" they consume.

BBC: Strand-1 'phone-sat' ready for orbit

"If you look at their game plan it's very simplistic but they are very efficient at it, stopping it is another thing, " Jones said.

BBC: Jones praise for Wales rival Hook

"We know he's hot and we tried to get the ball out of his hands, but he's very efficient and can score in various ways, " Wall said.

WSJ: Knicks win 1st Atlantic division title since 1994