Causing death; destructive; fatal.

致死的；具毁灭性的；致命的。

Relentless.

残酷的；毫无慈悲之心的。

Resembling death; deathly.

似死的；死状的。

Highly effective against something or someone.

击中要害的。

Marked by determination or very great seriousness.

【口】坚决的；极严重的。

Relentlessly.

残忍地。

Like death.

似死的。

Extremely.

过度地:极端地。

Deadly applies to an established or very likely cause of death.

Deadly 指必定或很可能致死的：

Mortal implies that death has occurred or is inevitable.

Mortal 指已死的或死亡之不可避免：

But, unlike deadly, it may not be applied to weapon.

但其与 deadly 不同之点，即mortal不可形容武器之致命。

Mortal and deadly both describe that which can end only with death, or is merciless.

Mortal 与deadly 均指死而后已或毫不慈悲的：

Mortal also describes those subject to death.

Mortal 亦指终有一死之人或物：

Fatal comes between deadly and lethal in inevitability and may refer to other calamities than death.

Fatal 之必然遭祸的含意介乎 lethal 与 deadly 之间， 可指死亡或其他的大灾祸而言：

Lethal applies only to something that is bound to cause death or exists for the destruction of life.

Lethal 只用于会致死的东西，或指用以催毁生命之物：