waste

1. V-T If you waste something such as time, money, or energy, you use too much of it doing something that is not important or necessary, or is unlikely to succeed. 浪费

There could be many reasons and he was not going to waste time speculating on them. 原因可能很多，而他不打算浪费时间猜测这些原因。

I resolved not to waste money on a hotel. 我决定不把钱白白浪费在旅馆住宿上。

2. N-SING Waste is also a noun. (时间、金钱等的) 浪费

It is a waste of time going to the doctor with most mild complaints. 为了种种小毛病去看医生是浪费时间。

3. N-UNCOUNT Waste is the use of money or other resources on things that do not need it. 浪费

The packets are measured to reduce waste. 测量包裹尺寸以减少浪费。

4. N-UNCOUNT Waste is material that has been used and is no longer wanted, for example, because the valuable or useful part of it has been taken out. 废物; 废水[also N in pl]

Congress passed a law that regulates the disposal of waste. 国会通过了一条管理废物处理的法律。

...the dangers posed by toxic waste. …有毒废弃物造成的危险。

5. V-T If you waste an opportunity for something, you do not take advantage of it when it is available. 错过 (机会)

Let's not waste an opportunity to see the children. 我们别错过看看孩子们的机会。

6. ADJ Waste land is land, especially in or near a city, that is not used or taken care of by anyone, and so is covered by wild plants and rubbish. 荒芜的; 废弃的[英国英语]

7. PHRASE If something goes to waste, it remains unused or has to be thrown away. 被浪费掉

So much of his enormous effort and talent will go to waste if we are forced to drop one hour of the film. 如果我们被迫删减一小时的电影，就会浪费掉他的非凡努力和才华。

8. to waste no time→see time