有成本效益的

(adjective) Making optimal use of available funds; not wasteful.

例句

EXAMPLE: Our company used to be careless and waste a lot of money, but now we are trying to be more cost-effective by looking at the financial returns we get for every investment we make.

我们公司过去不精打细算，浪费了很多钱，但现在，我们关注每笔投资的回报，努力提高成本效益。

王冠宝石，精华

(IDIOM) The finest or most valuable item among a group of similar items.

EXAMPLE: While the huge hospitality company owns fine hotels in several cities, its managers feel their splendid old hotel in the capital is the jewel in the crown, and speak about it proudly.

尽管这家大型酒店管理集团在好几座城市拥有出色的酒店，但经理们认为，位于首都的那座华丽老酒店才是王冠宝石，在说起它时感到骄傲。