她采了一束矢车菊装饰餐桌。

She picked a bunch of ___bluebottles to decorate the dining table.

一只蓝瓶苍蝇在腐烂的水果上爬行。

A ___bluebottle was crawling on the spoiled fruit.

那只蓝蜻蜓正在检查超速的车辆。

The ___bluebottle is checking for speeding cars.