Unbeknown
a. 未知的, 不为人知的
✅ 同义词
🗣️ 情景例句
Two hours from now.
从现在起还有两个小时。
I don't seem to have any luck today.
我今天运气不好。
Oxygen is widely used in ship repairs for cutting and joining metal plates or pipes.
在船舶修理过程中，常常使用氧气切割和焊接金属板或金属管。