| 释义 |
gymnosperms 英dʒɪm'nɒspəmz美dʒɪm'nɒspəmz COCA¹⁸⁰⁶⁹²BNC⁹¹⁵¹⁷⁺⁸
基本英英例句例句
裸子植物类,裸子植物原型gymnosperm的三单
名词 gymnosperm:
plants of the class Gymnospermae having seeds not enclosed in an ovaryIts nativegymnospermscould evolve into a few species capable of growing in the warm, moist forests of Queensland.本地的裸子植物可进化成能在昆士兰温暖湿润林区的树种。
Most angiosperm ovules possess two integuments, whilegymnospermsusually have only one.大多数被子植物的胚珠有两层珠被，而裸子植物通常只有一层。 He also observed that gymnosperm ovules were not enclosed in an ovary wall, leading to the establishment of one of the basic differences between angiosperms and gymnosperms.
他还观察到裸子植物的胚珠并不是被子房壁包围，这个发现直接导致了被子植物和裸子植物之间最根本的几点区别的建立。 iciba |