Disulphid
n. 二硫化物
🗣️ 情景例句
What works?
什么有效！
How much would you like to remit?
您想汇多少钱？
Only good scouting is likely to preserve the freedoms so dear to the heart of the eternal Boy Scout.
只有优良的童子军活动才能保持不朽的童子军所衷心热爱的各项自由。