In Greece, rhododendrons and oleander bloom only in springtime, when they are the predominant sources of nectar.
在希腊,杜鹃花和夹竹桃只在春天开花,那时它们是花蜜的主要来源。
The archaeological evidence clearly indicates, though, that Teotihuacán was the center that did arise as the predominant force in the area by the first century A.D.