1ADJ-GRADED [usually ADJ n]极其严重的;令人担忧的 If you describe something such as a loss as grievous, you mean that it is extremely serious or worrying in its effects. 极其严重的;令人担忧的
Their loss would be a grievous blow to our engineering industries.
失去它们将会是对我们工程行业的一个沉重打击。
Mr Morris said the victims had suffered from a very grievous mistake.