Unidirection
[计] 单向
🗣️ 情景例句
You can't take her promises seriously, she never keeps her word.
她答应的事不用当真，她说话从来不算数。
Men know where they were born, not where they shall die.
人能知其生于何地，不能知其死于何方。
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。