Transport by sea is the most important mode of transportation in the world today.
海运是目前世界上最重要的一种运输方式。 

Usually, it is cheaper to have the goods sent by sea than by railway.
通常，海运较陆运便宜。 

For such a big order, we propose to have the goods dispatched by sea.
数量如此多的货物，我们建议走海运。

Please dispatch the TV sets we ordered by sea.
请海运我们订购的电视机。 

Because of the high cost of railway transportations, we prefer sea tansportations.
因为铁路运输费用高，我们愿意走海运。 

Sometimes sea transport is troublesome to us.
有时海运对我们来说麻烦。 

Please have the goods transported by air.
请空运此批货 

To move the goods by railway is quicker.
铁路运输较快。 

We don't think it is proper to transport the goods by railway.
我们认为此货不适合用铁路运输。 

Can you have them sent by railway?
能采用 陆运方式吗？ 

You may have some difficulties in arranging railway transportation, I guess.
我猜你们安排铁路运输有困难。 

We have arranged to transport the rice you purchased by rail.
我们已安排用火车运输你们所需的大米。 

We would prefer to have goods carried by road and not by railway.
我们宁愿用公路运输而不用铁路。　

Words and Phrases
to transport by sea 海运
to transport by railway 陆运
transportation by sea, land, air, and mail 海、陆、空、邮运输
to arrange transport 安排运输
to have some difficulties in 在……有困难