Most of the kids have never seen the sea.

多数孩子从未见过海。

All transport operations, whether by sea, rail or road, are closely monitored at all times.

所有的交通活动，无论是通过海路、铁路还是公路，都时刻受到密切监视。

He drowned after 30 minutes in the rough seas.

他在汹涌的海浪中挣扎了 30 分钟后淹死了。

The seas are warm further south.

海水的温度越往南越高。

...the North Sea.

北海

...the huge inland sea of Turkana.

图尔卡纳浩瀚的内陆海

Down below them was the sea of upturned faces.

他们下面是无数张仰望的脸。

His eyes ran over the sea of bottles and glasses on the table.

他扫了一眼满桌的瓶子和玻璃杯。

If you had never seen a telly ad, you would be all at sea with popular culture.

如果你从没看过电视广告，你就搞不懂什么是大众文化。

The boats remain at sea for an average of ten days at a time.

这些船只每次在海上平均航行 10 天。

His body was found at sea in waters off the Canary Islands.

他的尸体在离加那利群岛不远的海上被发现。

...fishermen who go to sea for two weeks at a time.

每次出海两周的渔夫们

He pointed out to sea.

他指向大海。