n.间脑，中脑...

环戊二烯...

The ancients knew more than we do about the heavens.古代人对于上天比我们知道得多。The ancients conceived the earth as afloat in water.古人认为地球飘浮在水里。This corroborative, young sir, was unknown to the ancients.年轻的先生, 这种强壮剂古人是不知道的....

The disquietude of his air, the somewhat apprehensive impatience of his manner, surprised me.他神情不安, 急躁的举止中有点担忧, 这使我吃了一惊.He kicked the chair in a spasm of impatience.他突然变得不耐烦，一脚踢向椅子。He expressed impatience at the slow rat...

n.方便( convenience的名词复数 )，便利，有用、有益或适宜的安排、用具或设施，（公共）厕所...

She's proficient in several languages.她精通好几种语言。a technically proficient performance of the piece精湛的乐曲演奏She was very proficient in music.她非常精通音乐.Mr. Barret is not proficient in diagnosis, let alone investigation.巴瑞特先...

n.熟练，精通，娴熟...