labelling

例句：

1. 1. The scientists are conducting experiments to label the samples for analysis.
   科学家们正在进行实验，为样本贴上标签以便分析。
2. 2. The company is required to label all its products clearly for consumer protection.
   该公司被要求为其所有产品贴上清晰的标签以保护消费者权益。
3. 3. The labelling of food products is a crucial step in ensuring food safety.
   食品产品的标签化是确保食品安全的关键步骤。