tidal stencils

例句：

1. 1. The tide is coming in, and the beach is getting crowded.
   潮水正在涨，海滩上的人越来越多。
2. 2. The tide has been out for a few days now.
   潮水已经退了几天了。
3. 3. The tide is expected to rise again tomorrow.
   预计明天潮水会再次上涨。