You can't really know a boat until you've been on it under sail.

你若没有驾它出海，就不可能真正了解这艘船。

youdao

Right in front of me, not half a mile away, I beheld the Hispaniola under sail.

我看到在我正前方不到半英里的地方，西斯·潘尼·奥拉号在扬帆而行。

youdao

The term "sailing vessel" means any vessel under sail provided that propelling machinery, if fitted, is not being used.

“帆船”一词，指任何使帆的船舶，如果装有推进器但不在使用。

youdao

An old expression of the sailors that is still heard is to sail under false colors.

VOA: special.2009.05.24

Today,a person,not a ship, is said to sail under false colors.

VOA: special.2009.05.24

We almost made it under sail and oar, but Norman, the skipper of the safety yacht, towed us the final half-mile to the anchorage.

WSJ: The Low-Tech, High-Stakes Way to Sail Scotland

Very few ships worldwide sail under U.S. flag and with an all-American crew.

FORBES: Venezuela Frees U.S. Ship And Crew After Smuggling Investigation

"People keep their little sail boat, or canoe under the hut or next to the hut, " Mr White continued.

BBC: NEWS | UK | England | Dorset | 'Garden shed' beach hut for sale