Mathematical operation
un. 数学运算\\n
🧩 词语组成解析
🗣️ 情景例句
Four will be good.
4只应该够。
The devil knows may things because he is old.
老马能识途。
It is true that during their explorations they often faced difficulties and dangers of the most perilous nature, equipped in a manner with would make a modern climber shudder at the thought,
确实，在探险中他们经常遇到惊心动魄的困难和危险，而他们装备之简陋足以使现代登山者一想起来就胆战心惊。