L.f.d.
[医] 最低致死量(毒素)
🗣️ 情景例句
Are you experienced in office management?
你在企业管理上有经验吗？
Money answers all things.
金钱是万能的。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。