prep. In the midst or middle of; surrounded or encompassed by;
among.
常见例句
1
n a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds
2
street name for lysergic acid diethylamide s
3
n any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt n street name for lysergic acid diethylamide
4
a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals
