Fd50
[医] 半数致死量
🗣️ 情景例句
It's not the same, Richard.
那是不一样的， Richard。
We've got to get a bed and a dresser for the bedroom.
我们必须有一张床和梳妆台放在卧室。
The rough across the plain soon became so bad that we tried to get Bruce to drive back to the village we had come from.
穿越平原的道路高低不平，开车走了不远，路面愈加崎岖。我们想劝说布鲁斯把车开回我们出发的那个村庄去。