这样的人是没有不摔跟头的。

Such people are bound to trip and fall.

人们经常在问题的鉴别上摔跟头。

Identifying the correct problem to work on is often where people trip up.

父爱是拐杖，让我们在人生中少摔跟头。

Love is a crutch, let little stumble in life.

要预测自己会在哪一步跌倒，这样你就不至于摔跟头。

Be sure where your next step will fall, so that you will not tumble.