an efficient secretary
效率高的秘书
efficient heating equipment
效能好的供暖设备
the efficient use of energy
能源的有效利用
As we get older, our bodies become less efficient at burning up calories.
随着一天天衰老，我们的身体消耗热量的功能逐渐减弱。
fuel-efficient cars(= that do not use much fuel)
节能汽车
1.有效的,有力的;效率高的
2.有实力的;有能力的,有本领的;能胜任的
1.something that is efficient works well and produces good results by using the available time, money, supplies, etc. in the most effective way; someone who is efficient works well and quickly and is good at organizing their work in the way that gets the best results
1.International funds could be used to subsidise low-interest loans to energy-efficient buildings, or to pay for technology transfer.
国际基金应该被用来补贴低息贷款来支持高能效建筑或支付技术转移的费用。
2.Follow the advanced system, the economy, security, efficient, reliable, easy to operate, easy to maintain and open design principles.
系统遵循先进、经济、安全、高效、可靠、易操作、易维护和开放的设计原则。
3.The directory printer is an easy-to-use and efficient tool that can customize directory listings to fit your own preferences.
目录打印机是一个易于使用的和有效率的工具，可以自定义目录列表，以适应自己的喜好。
4.Second, humans are able to innovate and can use the land that they already possess in more efficient ways. Animals are unable to do this.
其次，人类可以创新并且以更有效率的方式来使用已经拥有的土地，动物则无法做到这一点。
5.Since the market is more or less efficient, it tends to exact a higher price for higher quality and a lower price for lower quality.
由于市场是更多或更少效率，它往往精确更高的价格，更高的质量和较低的价格为低质量。
6."It's the most efficient female colleagues who are lining up to leave, " says an official at the civil-service union.
“排队要走的是这些最有效率的女性同事”公务员工会的一位官员说。
7.The system was efficient and accurate and was easy to operate.
系统操作方便，检测速度快，判断准确率高。
8.The US wants to see a "more fair and efficient allocation of credit and capital" in China, he said.
美国政府想要在中国看到一个更加公平和有效的分配信贷和资本的金融系统。
9.So if cellulosic ethanol is to live up to its promise, researchers will have to find cheaper and more efficient enzymes.
如果纤维乙醇真能不负所望，科研人员就必须要找到更便宜有效的酶。
10.And that's one of the disadvantages, these reactors are not designed to be big but are suitable for highly efficient electric production.
那是缺点之一，这些反应堆不是要设计的很大，但是要对高效能的，电子生产适合。