Definitions

[1] 化学药品

[2] 化学制剂

[3] 化学制品

1. When the body is touched, receptors in the skin send messages to the brain causing the release of chemicals such as endorphins.
   當身體受到外界觸碰的時候，皮膚的感受器就會向大腦發出信息，令大腦釋放安多芬等的化學物質。
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