Diaminostilbene disulfonic acid
[化] 二氨基┴二磺酸
🧩 词语组成解析
🗣️ 情景例句
What else?
还有什么？
It's not up to his usual standard.
这次没有达到他平时的水平。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事实上搜寻工作很困难，因为常常是早晨在甲地发现那只美洲狮，晚上却在20英里外的乙地发现它的踪迹。