在机场时，始终让你的行李保持在视线内。

Always keep your luggage in ___sight at the airport.

徒步时，不要让宠物离开你的视线。

Don't allow your pets to wander out of your ___sight during the hike.

当我们转过弯时，湖泊映入眼帘。

The lake came into ___sight as we rounded the bend.