盐量计

例句：

1. 1. The salt level in the ocean is constantly changing due to tides and currents.
   由于潮汐和洋流的影响，海洋中的盐度不断变化。
2. 2. The salt level in the ocean is closely monitored by scientists to ensure its safety for marine life.
   科学家密切监测海洋中的盐度，以确保其对海洋生物的安全。
3. 3. The salt level in the ocean has a significant impact on the ecosystem, affecting not only fish butalso other marine organisms.
   海洋中的盐度对生态系统有显著影响，不仅影响鱼类，还影响其他海洋生物。