Dimethylene
二亚甲基
🗣️ 情景例句
On a studect visa, full-time work is not permitted.
持学生签证的话，不允许做全职工作。
The best horse needs breaking, and the aptest child needs teaching.
玉不琢不成器。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。