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- Chemical reactions would not do the trick, because all isotopes are chemically identical. 不可能是化学反应，因为所有同位素的化学性质都一样。
- be chemically identical 在化学性质上是相同的
- Contaminated instruments and floor surfaces should be chemically disinfected. 污染的器材和地面要用化学药物消毒。
- Biscuits and crackers are chemically leavened. 饼干和脆饼干是用化学方法发酵的。
- Laboratory analysis can prove that the knockoff is chemically identical to the name-brand drug. 实验室的分析可以证明仿制品的化学性质等同于品牌药品。
- Hydrocarbons have to be chemically altered to make useful products and materials. 碳氢化合物需改变化学结构;方能制成有用的产品或物料.
- Saponins can be chemically categorized as comprising an aglycone linked to one or more sugarchains. 熊果酸作为一种植物提取的天然药物，安全、副作用小，而且其药理活性十分广泛，已经引起了国内外学者普遍关注和广泛兴趣。
- UV ink: Inks which are chemically reactive to ultraviolet light. 紫外线墨：紫外光会引致化学反应的墨。
- We do not consider melting or boiling to be chemical changes. 我们认为熔化或沸腾不是化学反应。
- These are physical changes while those are chemical changes. 这些是物理变化而那些是化学变化。
- Many smokers who are chemically addicted to nicotine cannot cut down easily. 许多有尼古丁瘾的抽烟人不容易把烟戒掉。
- Only about 2% of the deposits are chemical grade. 蕴藏中只有大约2%25是“化学级”的。
- Carbon and hydrogen are chemical elements. 碳和氢是化学元素。
- Unfortunately he won't be here tomorrow evening. 可惜的是他明晚不在这儿。
- He has a yen to be alone in a boat. 他渴望独自待在一条船上。
- It is necessary that he be sent there at once. 有必要马上派他到那里去。
- I think most of these obstacles can be surmounted. 我认为这些障碍大多数都是可以克服的。
- We inject guinea pigs or rabbits with enkephalins that are chemically coupled to large proteins. 我们将脑素和大分子蛋白质从化学上结合起来，把它注射给豚鼠或兔。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He likes to be sure of his bodily comforts. 他注重身体上的舒适。
