spread film

例句：

1. 1. The scientist carefully spread the film on the surface of the water.
   科学家小心翼翼地将薄膜铺在水面上。
2. 2.The chemical reaction is responsible for spreading the film across the surface.
   化学反应导致薄膜在整个表面上扩散。
3. 3. The film was spread over the entire area to prevent dust from settling in.
   薄膜被均匀地涂抹在整片区域，以防止灰尘沉降。