Meat is, at best, a secondary source of essential elements.
肉类充其量不过是身体基本要素的次要来源。
Both theoretically and from the perspective of social norms, the customary law should at least be a secondary source of our country "s legal system."
无论从理论还是从规范上分析,习惯法在我国法制上至少应占据次位法源的地位。
Although diesel exhaust may be a source of secondary aerosols, paint and solvents, outdoor barbecues, and vegetation also contribute significantly, he says.
他说虽然柴油燃烧的排放可能是次生气溶胶的来源之一,涂料和溶剂,室外烧烤和植物也是重要的来源。
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