It also highlighted a common critique of organic farming: It's already hard to feed billions of people, even without rules against spraying chemicals or swapping genes.
Vocal music teaching of secondary vocational schools is an organic part of music education system of secondary vocational schools in our country, which has its own rules and characteristics.
中等职业学校声乐教学是我国中等职业学校音乐教育体系中的一个有机组成部分，有其自身的规律和特点。
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Organic chemistry's woodward-hoffmann rules (which Hoffmann developed with Robert Burns Woodward) predict the positions of atoms within certain kinds of molecules.