可以組成單詞helpful,意思是:adj.有用的有益的有幫助的願意幫忙的。
例句: made helpful comments on my work.
她對我的工作提出了有益的意見。
2、"This is a very sensible way for an animal to make decisions in the wild and would have been very helpful for humans for thousands of years."
"這是動物在野外做決定的一種非常明智的方式,幾千年來對人類都是非常有益的。"