徵求幫忙英翻中！「快樂是人生的關鍵」

A 是 B 的關鍵

在英文裡，最常用的是形容詞，而非名詞。

A is crucial to B. （crisis 其實就是『危機』=『要命之處』=『關鍵』）
A is pivotal to B. （pivot 其實就是『樞紐』=『關鍵』）

快樂是人生的關鍵
Happiness is pivotal (或 crucial) to our life.

"Happiness is the key to life"

Happiness is pivotal to life.

「快樂是人生的關鍵」
這不是一個語意通順的句子, 人生有悲歡離合、喜怒哀樂、生老病死, 怎能一概而論.
應說: 「快樂是成功人生的關鍵」
Happiness is the key to a successful life.
Happiness is the key essence of a blissful life.

Happiness is the key to life.

「快樂是人生的關鍵」

The secret of life is to be happiness.

Don't use the Google translate;
Happiness is the-----the is definite article be used
key to ; not key of; not key of human ...
to life=to a blessed/joyful/lively/
life=being existence/life on earth
The translate C/E:-(do not use the Google,pl;)
"Happiness is the key to life."

Happiness is key to human lives.

Heppuness is the key of life.

2012-11-11 00:56:17 補充：
改一下，正解：Happiness is the key of life.【抱歉，打太快】