Cholestrophane
[化] 二甲基乙二酰脲
??? 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻煩你母親啦？
She's off to Guangzhou tomorrow.
她明天出發去廣州。
Imagine the effect on a reasonably advanced technological society,
那么可以設想，這將對這個社會產生何等的影響。但科技相當發達的社會，