Titanium in the pure state can exist in either of two allotropic forms.纯钛以两种同素异形的形式存在.Carbon and sulfur and phosphorus are allotropic elements.碳、硫磺和磷是同素异形元素.Ozone ( O 3 ) is allotropic form of oxygen ( O 2 ) with three a...
她有时在伦敦过周末.Every so often, she takes a weekend in London.海伦在她叔叔家过周末.Helen passed her weekend at her uncle's.想让我们的生活步调保持一致好一起去度假和过周末几乎是不可能的事。It was virtually impossible to synchronise our lives so as to take holidays ...
在赫伯特·怀斯曼的风琴伴奏下，我们演唱了布莱克的《耶路撒冷》作为终曲。We ended with Blake's Jerusalem, accompanied on the organ by Herbert Wiseman.教堂风琴手可能以基础低音即兴演奏.The church organist may improvise on a ground bass.他用风琴演奏出一支动听的曲子.He played a beautifu...