例句與造句

1. The median toxic dose for humans ranges from 10 to 1000 micrograms per kilogram when ingested and is 3.3 micrograms per kilogram when inhaled.
2. It has a median toxic dose of 0.7 micrograms per kilogram of body mass when given to mice intravenously ( approximately 31.4 times more toxic than ricin being 22 micrograms per kilogram ).
3. It's difficult to find median toxic dose in a sentence. 用median toxic dose造句挺難的