noun 下载 🔗分享 单体，链节 A repeat unit: a structural unit which through repetition forms a polymer. Examples : "The long chain of the plastic toy was built from repeating ethylene mers, linked together to form a strong polymer. " 这个塑料玩具的长链是由重复的乙烯单体连接而成，这些单体结合在一起形成了一种坚固的聚合物。 chemistry material substance compound structure 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 美人鱼，人鱼。 Merpeople Examples : "The old sailor told us exciting stories about mer he claimed to have seen in the deep ocean. " 那位老水手给我们讲了许多激动人心的故事，说他曾在深海里见过美人鱼。 mythology inhuman being supernatural story 与AI对话词汇游戏阅读练习
