by sea 和by the sea 区别.

" by sea表示“经海路”； by the sea表示 “在海边”

① ""How did you go there? By train?"" ""No, we went there by sea."" “你们怎么到那里去的?乘火车?”“不，我们乘船去的那里。”

③I'm terrified of flying I'd rather go by sea. 我害怕坐飞机--我宁愿坐船.

④May I ask if you are fond of traveling by sea? 我可以问一下你是否喜欢海上旅行？

⑤ The Turners lived by the sea. 特纳一家住在海边。"