Contracts
n. 契约( contract的名词复数 ); 婚约; [法律]契约法; 行贿
🗣️ 情景例句
If you're not sure, then the answer should probably be no.
如果你不确定，那么答案可能就是“不”了。
Did you see him yourself?
你自己亲自看到他吗？
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。