waterproof grease

例句：

1. 1. This type of grease is specially formulated to prevent water from penetrating the surface.
   这种润滑脂特别设计成防止水分渗透表面。
2. 2.The engineer used this grease on the machine's moving parts to ensure smooth operation.
   工程师在机器的移动部件上涂上了这种润滑脂，以确保顺畅运行。
3. 3.The waterproof grease was essential for the construction project, preventing any accidental leaks during the pouring process.
   防水润滑脂对于建筑项目至关重要，防止在浇筑过程中发生意外泄漏。