I view his conduct in the gravest light.

我以极严重的态度看待他的行为。

When in eternal lines to time thou gravest.

你将在不朽的诗中与时间同在； ；

We're faced with the very gravest of challenges.

我们现在所面对的，是有史以来最大的挑战。

The infection of gravest import is burn wound sepsis.

最严重的感染是烧伤创面脓毒症。

That was the gravest occasion Davy had ever taken part in.

这是戴维参加的最庄重的场合。