| 单词 | lower surface |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔dorsiventral〕Botany Flattened and having distinct upper and lower surfaces, as most leaves do.【植物学】 有背腹性的：象大多数叶子那样扁平而有鲜明的上下表面的美国传统〔downy mildew〕A disease of plants caused by fungi of the order Peronosporales and characterized by gray, velvety patches of spores on the lower surfaces of leaves.霜霉病：霜霉科真菌引起的植物疾病，患此病的植物叶背面有一簇簇的灰色绒状胚芽美国传统〔hypogenous〕Growing on a lower surface of a structure, as fungi on leaves.长在下边的；下位的：长在一个结构的下部表面上，比如叶子上的菌类美国传统〔pavilion〕The lower surface of a brilliant-cut gem, slanting outward from the culet to the girdle.（宝石等的）底面：多角形宝石的下部表面，从底面向外倾斜美国传统〔ventral〕Relating to or situated on or close to the anterior aspect of the human body or the lower surface of the body of an animal.前侧的：关于或位于或邻近人体前部的或动物身体下部表面的美国传统 |
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