Whenever a plant responds to applied , i . e . , unbalanced, applications of auxin, ethylene is produced.当一植物对不平衡地施用生长素起反应时, 总是产生乙烯.Apical buds produce a growth hormone called auxin.顶芽分泌出叫做生长素的生长类激素.These bars buds thems...

autonomist的音标：autonomist的英式发音音标为：[ɔ:'tɒnəmɪst]autonomist的美式发音音标为：[ɔ'tɒnəmɪst]...

自燃...

auklet的音标：auklet的英式发音音标为：['ɔ:klɪt]auklet的美式发音音标为：['ɔklɪt]...

austenitize的音标：austenitize的英式发音音标为：[ɔ:s'tenətaɪz]austenitize的美式发音音标为：[ɔs'tenətaɪz]...

plateaux的音标：plateaux的英式发音音标为：['plætəʊz]plateaux的美式发音音标为：[plæ'toʊz]...