他是个离群索居、胆小羞怯的家伙。He is a reclusive, timorous creature.他公然指责对手胆小懦弱。He openly accused his opponents of cowardice.格雷戈里，你怎么就这么胆小呢？Why are you so chicken, Gregory?...
If you want to grasp English, you must carefully discriminate synonyms.如果你想掌握好英语, 你必须仔细区分同义词.Use a thesaurus to find synonyms for two of your words.使用词典找到你的词汇中的两个同义词.This article analyzes synonyms for one object in Zhuan...
To stability analysis of tethered balloon, a three dimensional nonlinear mathematical model tethered aerostat was assembled.为研究系留气球稳定性,建立了系留气球的三维非线性动力学模型....