orchids

1.Many orchids have resupinate flowers.

许多种兰花都有倒垂的花朵。

2.She breeds orchids in her greenhouse.

她在温室里培育兰花。

3.Wild flowers such as orchids and primroses are becoming rare.

兰花和报春花这类野花越来越稀少了。

4.orchids with leafy-bracted racemes of greenish or purplish irregular flowers.

兰科的一个属，花不则，绿色或紫色，排成总状花序，生于叶状苞片内。

5.The observation on the microstructure of six orchids demonstrated that they have the typical orchidaceous roots with velamen and thick cortical tissue.

本文对密花石斛等六种兰科植物根的显微结构进行了比较观察。