🗣️ 情景例句
Challenge, the feeling of accomplishment, and knowing that you have made a contribution.
挑战，成就感和知道自己做出了贡献。
What's the date today?
今天是几号？
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。