wetted bulb

例句：

1. 1. The hydroponic garden is a popular choice for beginners.
   水培花园是初学者的热门选择。
2. 2.The hydroponic technique allows for the growth of many different types of plants.
   水培技术允许生长多种不同类型的植物。
3. 3. In hydroponic farming, nutrients are added directly to the water rather than soil.
   在水培农业中，营养物质直接添加到水中而不是土壤中。