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...
The wealthier may have to pay a little more in taxes.更富有的人可能得多缴一点儿税。Private libraries also became common among the wealthier Greeks.私人图书馆在富有的希腊人当中也逐渐增多.That may be true, but industry's making us wealthier.这也许是真的, 不过...
She paused to coo at the baby...她停下来，轻声地对着婴儿说话。Trimble paused, looking carefully at the brownstone house.崔博停了下来, 很仔细地看着这褐色砂石墙的房子.He paused to consult his notes,and then proceeded with his question.他停了下来看了看笔记，然后继续提问。We pa...