英语语法分析

What's the area of Canada in square kilometer?

加拿大的面积有多少平方公里？

She watched the train drag her car almost a kilometer down the railway tracks.

她看着火车把她的车沿着铁轨拖了将近一公里。

The game included three events: full marathon, half marathon and 5 kilometer mini marathon.

比赛包括全程马拉松、半程马拉松和5公里迷你马拉松三个项目。