translation.en: What's a drug? A drug is made up of a small molecule of hydrogen, carbon, oxygen, nitrogen, and a few other atoms all cobbled together in a shape, and it's those shapes that determine whether, in fact, that particular drug is going to hit its target.
translation.zh: 药是什么？药是由 氢分子，碳分子 氧分子，氮分子和一些其他原子 联结成特定形状的物体， 事实上正是这些形状决定 特定的药能够达到疗效。