海路 かいろ
kairo

Noun
Adverb

1. sea route

陸路 りくろ はこぶのは大変 たいへんですが、海路 かいろ はこぶのは簡単 かんたんです。
rikurō hakobu nowa taihendesuga kairode hakobu nowa kantandesu.
It's very difficult to transport them overland, but simple to do so by sea.
Other forms: