关于移民的辩论已经成为一个高度敏感的政治议题。

The debate over immigration has become a highly ___explosive political issue.

环境污染是一个需要立即关注的、一触即发的问题。

Environmental pollution is an ___explosive issue that demands immediate attention.

这座城市种族关系的紧张和火药味导致了广泛的抗议活动。

The tense and ___explosive nature of race relations in the city led to widespread protests.