mean low tide

例句：

1. 1. The tide is coming in, and the beach is getting crowded.
   潮水正在上涨，海滩上越来越拥挤。
2. 2.The fishermen are waiting for the mean low tide to come in.
   渔民们正在等待低潮到来。
3. 3.The low tide will be at 5 p.m., so we should leave early.
   低潮将在下午5点，所以我们应该早点离开。