single pull hatchcover

例句：

1. 1. The single-pull hatch cover is designed to protectthe cargo from the elements.
   单拉式舱口盖设计用来保护货物免受恶劣天气的影响。
2. 2. The single-pull hatch coverwas installed to improve airflow in thecargo hold.
   安装单拉式舱口盖是为了改善货仓内的气流。
3. 3. The single-pull hatch cover is a crucial componentof any ship's lifeboat system.
   单拉式舱口盖是任何船只救生艇系统的关键组成部分。