远处传来的雷鸣般的轰隆声吓到了孩子们。

The deep ___booms from the distant thunder frightened the children.

房地产市场在过去十年经历了多次繁荣期。

The real estate market has seen several ___booms in the past decade.

暴风雨中，一根横杆断裂了，导致船帆无法正常展开。

During the storm, one of the ___booms broke, making the sail unable to open properly.