窗台上停着一只闪着金属光泽的蓝色大苍蝇。

A shiny ___bluebottle landed on the windowsill.

花园里点缀着几只美丽的蓝蝴蝶。

The garden was adorned with a few beautiful ___bluebottles.

海滩上漂浮着几只蓝色的僧帽水母，游客们被警告不要靠近。

Several ___bluebottles were floating near the shore, and tourists were warned to stay away.