These agencies may be all grouped together, for the sake of brevity, under the expression of the laws of growth.

为了简洁起见， 可以将这些机构全部归为一组， 以表达增长法则。

These slight proportional differences, due to the laws of growth and variation, are not of the slightest use or importance to most species.

由于生长和变异的规律， 这些微小的比例差异对大多数物种没有丝毫用处或重要性。

Nevertheless all living things have much in common, in their chemical composition, their cellular structure, their laws of growth, and their liability to injurious influences.

尽管如此， 所有生物在化学成分、 细胞结构、生长规律以及对有害影响的易感性方面都有许多共同点。