Dimethylbenzidine
二甲基联苯胺, 联甲苯胺
🗣️ 情景例句
Always full of surprises.
总是出人意表。
My book has a dark blue cover.
我的书有一个深蓝色的封面。
In the 1970s, computers were common enough, but only in big business, government departments, and large organizations.
在70年代，计算机已经相当普及了，但只用在大公司，政府部门和大的组织之中，