植物生长激素促进植物生长的一种物质生长素人体生长激素由脑垂体前叶分泌的一种刺激生长的物质 human growth hormone 略作gh
human growth hormone, abbreviated as gh, is a substance that promotes plant growth and is secreted by the anterior lobe of the pituitary gland to stimulate growth
以上为机器翻译结果，长、整句建议使用 人工翻译 。