Converting the bikes to amphibiousvehicles to explore Halong Bay might be a step too far for a holiday.
把摩托车改成水陆两栖车驶进下龙湾，对度假者来说是有点过分了。
2
Probably constructing a railway on the bottom of the sea isn't such a great idea after all, but we do have amphibiousvehicles.
也许在海底修建铁轨并不是什么值得称道的主意，但是现如今我们也有水陆两用卡车。
3
Amphibiousvehicles make loads of sense, particularly when the vehicle can carry five people to the beach AND happily entertain everyone in the surf when you get there.