【问】 1. “Did Mary enjoy her trip on the ocean liner?”“No，she stayed in her cabin while theship was____.”

A. over the sea B. in the sea

C. to sea D. at sea(TOEFL，71.1)

2. I’m still quite____sea，please explain it once more.

A. in B. on C. at D. under

在上面两道试题中at sea的含义是什么?

【答】 见at sea。