phloem island

例句：

1. 1. The plant's phloem islands are filled with water and nutrients.
   植物的纤维岛充满了水和养分。
2. 2. The phloem islands are a vital part of the plant's life cycle.
   纤维岛是植物生命周期中至关重要的部分。
3. 3. The phloem islands are where the plant stores its energy reserves.
   纤维岛是植物储存能量储备的地方。