Sent_en: 2zh Most major flight zones from urban centers in Canada are in its southern portion , close to the U.S. where even winds might push a plane across the border .
Sent_yy: 大部分从加拿大城市中心起飞的航班，主要飞行区都在加拿大南部，那里靠近美国，甚至刮风就可能把一架飞机推过边境。