liquid sampler

例句：

1. 1.The liquid sampler is used to collect samples from the water for testing.
   液体采样器用于从水中收集样本进行测试。
2. 2. The liquid sampler was designed to be easy to use and accurate in measuring the concentration of chemicals.
   液体采样器设计得易于使用，且测量化学物质浓度准确。
3. 3. The liquid sampler is a crucial tool for environmental scientists to monitor pollution levels in rivers and lakes.
   液体采样器是环境科学家监测河流和湖泊污染水平的关键工具。