Ld
致死剂量
🗣️ 情景例句
So tell me about your educational history.
请告诉我你的教育经历。
The fox may grow grey, but never good.
狐狸活到老，永远难变好。
As the neighbours complained of the noise, my husband spent weeks training him to press his paw on the latch to let himself in.
由于邻居们对狗叫很有意见，所以我丈夫花了几个星期的时间训练它用脚爪按住门闩把自己放进来。