The dangerous, excitable tremor was still in her voice.她说起话来还是因为害怕及激动而颤抖。Mary sat beside Elaine, who today seemed excitable.玛丽坐在伊莱恩身边，伊莱恩今天似乎有些激动。a class of excitable ten-year-olds一群易兴奋的十岁儿童...
We had a long, happy, fruitful relationship.我们有过一段长久、愉快、双方都获益良多的关系。It was a fruitful meeting; we made a lot of important decisions.这是一次很有成效的会议, 我们做出了许多重大决定.Newton's laws were fruitful for the future development of s...