Aerobatics is a dangerous sport.是什么意思？

Aerobatics is a dangerous sport.

特技飞行是危险的运动.

aerobatics

n. 特技飞行，特技飞行术；

例句
The aerobatics were the best part of the show.
表演中最精彩的节目是特技飞行.

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

dangerous

adj. 危险的；

例句
He's taking a dangerous drug: it acts very fast on the central nervous system...
他正在服用一种危险的药物：这种药物能很快影响到中枢神经系统。

sport

n. 运动，乐趣，老兄，变种；v. 嬉戏，得意地穿戴，故意显示；

例句
This is the most dangerous professional sport there is, and the worst paid.
这是最危险的职业体育运动，但报酬却是最低的。