He offered to teach them water skiing.

他主动提出教他们滑水

Water skiing is an exciting sport.

滑水是一项很刺激的运动。

He goes in for water skiing.

他参加划水运动。

Water skiing originates from surfing.

滑水运动起源于冲浪运动。

Swimming and water skiing are both aquatic sports.

游泳和滑水都是两项水上运动。

In his fifties, he began to go in for water skiing.

他五十多岁才开始参加划水运动。