The consequences will be very grave if nothing is done.
如果不采取任何措施后果将会是非常严重的。
The country's economy is now in grave peril.
现在，这个国家的经济陷入了严重危机。
Is there life beyond the grave?
人死后有来生吗？
These words are carved on the stone beside his grave.
在他的墓碑上刻着这样的话。
He was looking correctly grave.
他表情严肃得体。