高空作业一直是他最大的恐惧来源。

Working at heights has always been one of his biggest ___bugaboos.

妈妈用怪物来吓唬不听话的孩子去睡觉。

Mom used the ___boogeyman to scare the naughty kids into going to bed.

团队解决了主要障碍，但一些小问题仍然困扰着我们。

The team tackled the major obstacles, but some minor ___bugaboos still bother us.