Work near roof edges, wall or flooropening, open sided floors.
在屋顶边缘，开放型的墙或地板上工作。
2
Certain butterflies move into spots of sunlight that have penetrated to the forest floor and display by opening and closing their beautifully patterned wings in the bright spotlights.
某些蝴蝶飞进阳光照射到的森林地面上，在明亮的阳光下煽动翅膀以展示自己的美丽。
3
He rose in an elevator to the seventh floor, moved down a hall, and, opening a door, walked into the office of an employmentagency.