His catamaran will do 37 knots.他的双体船的速度可以达到37节。The Tornado is the only Olympic class catamaran.托那多级是奥运会级别中唯一的双体船.On the surrounding waters of the resort isle, dive, windsurf, water - ski, even sail a catamaran.马库努度岛周围的水域...
a flag high atop a pole高挂在旗杆顶端的旗子There is a seagull perched atop the mast.有一只海鸥停歇在桅杆上.A tuft of grass atop the wall sways right and left in the wind.墙上一棵草,风吹两边倒....