sampling unit的用法和樣例：
例句
- Special care must be taken to ensure that no contamination of the sample occurs from sampling devices and storage containers.
特別注意的是從取樣裝置到保存容器必須確保樣品不受污染。 - Whenever the entity under sampling is required to help forward any sample, it shall offer assistance.
需要被抽樣單位協助寄送樣品的，被抽樣單位應當協助。
