Fluorin can avoid brown striation and whiten skins.氟:能消除褐色斑,使皮肤变白.The free fluorin content in liquid multi - vitamin was quantitatively analyzed by using a simple potentiometric titration.使用简单的电位滴定法定量分析维生素中游离氟的含量.It is c...
The company had falsely claimed that its products were biodegradable.公司谎称他们的产品是可生物降解的.In practice this is not the case since part of the sludge is not biodegradable.实际上不是这样,因为有一部分污泥不能为生物所降鲜.That car was said to be 95 per...
She was tangled in a snarl of logs and branches.她被困在一堆乱七八糟的木料和树枝中间。logs for the fire烧火用的木材The logs were knocked together as they floated down the stream.圆木顺流而下时互相碰撞着....