那天没有下雨，海面平静。

There was no rain that day and the sea was ___calm.

在我们的航行期间，海面平静。

The seas were ___calm during our voyage.

海面平静，几乎没有波浪，所以我们可以在水中放松。

The sea is ___calm with almost no waves, so we could relax in the water.