You are either very young or an incurable optimist.你要么非常年轻，要么是个不可救药的乐天派。Pete, ever the optimist, said things were bound to improve.一向乐观的皮特说,事情必定是会好转的.We are optimist and realist.我们是乐观主义者,又是现实主义者....
Bailey had always been an optimist , a sound Marxian optimist.贝利向来是个乐天派, 是个十足的马克思主义乐天派.Optimist: A man who gets treed by a lion But enjoys the scenery.乐观主义者: 被狮子逼上了树但仍然能欣赏风景的人.We are optimist and realist.我们是乐观主义者,又是现实主义者...
The stairway carpet is so frayed it threatens to unravel.铺在楼梯上的地毯磨损得很厉害，都快散了。What moves him is the desire to unravel the mysteries of nature.推动他们的还是解开自然之迷的愿望.There is still a good deal to unravel.还有不少问题要澄清....
另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.直到不久以前,人们对胸腺的功能尚不明了.The function of the thymus was unknown until relatively recently.动物的免疫系统由两个主要部分组成,即胸腺和骨髓系统.I...
It has now become clear how extraordinarily fecund a decade was the 1890s.现在已经很清楚19世纪90年代是多么超乎寻常、成就斐然的10年了。The pampas are still among the most fecund lands in the world.南美大草原仍然是世界上最肥沃的土地之一。This is a fecund animal.这是一只多产的...
肉样瘤病的肉芽肿无干酪化病灶.In sarcoidosis there are noncaseating granulomas.结节病是一种组织学上以 非 干酪化性肉芽肿形成为主要特征的特发性系统性疾病.Sarcoidosis is an idiopathic systemic disease characterized histologically by the formation of non - caseating granulo...