词典释义：
the branch of science which deals with the identification of the substances of which matter is composed, the investigation of their properties and the ways in which they interact, combine, and change, and the use of these processes to form new substances
化学。
the chemical composition and properties of a substance or body
化学组成和性质
-
the chemistry of iron 铁的化学组成和性质
-
[count noun]
the chemistries of other galaxies .其他星系的化学组成和性质。
〈喻〉 复杂（或神秘）的过程；复杂（或神秘）的现象
-
the chemistry of politics .复杂的政治。
the complex emotional or psychological interaction between two people, typically when experienced as a powerful mutual attraction
两人间复杂的感情（或心理）相互作用（尤指相互间的强烈吸引）
-
their affair was triggered by intense sexual chemistry .他们的风流韵事是由相互间强烈的性吸引促成的。
