Oops, wrong mouse click... Here's the last line.

 Strech out your friendly hand, and seize the admirable innocence young lifetime of yours. 

Let our hands reach out, tightly embrace the beauty and innocence of the wonder years of our life.

不要轻易去爱，更不要轻易去恨, 让自己活得轻松些，让青春多留下些潇洒的印痕。

你是快乐的，因为你很单纯；你是迷人的，因为你有一颗宽容的心。

让友情成为草原上的牧歌，让敌意有如过眼烟云。伸出彼此的手，握紧令人歆羡的韶华与纯真。

Do Not Love Quickly

Do not love someone quickly, nor do you hate someone quickly. [如果要文雅些, Love not someone quickly nor hate so quickly too. ] Do live Lead a relax carefree lifestyle style, and leave behind indelible debonair  left more freedom memories of youth.

You are happy because for you are pure and innocent. You mesmerize others because you have a generous heart. naive, and are charmful for you are forgivable.

Let the friendship be a song in of the pasture, and enmity be like disappearing mists before your eyes let go of all your hostile attitude to others. Strech out your friendly hand, and seize the admirable innocence young lifetime of yours.

不要轻易去爱，更不要轻易去恨, 让自己活得轻松些，让青春多留下些潇洒的印痕。

你是快乐的，因为你很单纯；你是迷人的，因为你有一颗宽容的心。

让友情成为草原上的牧歌，让敌意有如过眼烟云。伸出彼此的手，握紧令人歆羡的韶华与纯真。

Thanks to Hellen's and Jeff's, here is my two cents....

Love no one so easily nor hate so quickly.

不要轻易去爱，更不要轻易去恨.

Have a carefree and liberal life from within, leaving behind indelible debonair memories of youth.

让自己活得轻松些，让青春多留下些潇洒的印痕。

You are happy because of your pureness and innocence like a child;

你是快乐的，因为你很单纯;

You are charming because of your kind and generous heart like an angle.

你是迷人的，因为你有一颗宽容的心。

Let friendship be a song singing in a pasture, and enmity be mist evaporating before your eyes.

让友情成为草原上的牧歌，让敌意有如过眼烟云。

Reaching out and holding each other's hands, let us memorialize our young, innocent and wonderful life forever.

伸出彼此的手，握紧令人歆羡的韶华与纯真。

Do Not Love Quickly

Do not love someone quickly, nor do you hate someone quickly.

Don't rush into infatuation; nor haste.

Do live a relaxing lifestyle, for more freedom memories of youth.

You are happy for you are true to your heart, and are charmful for you are forgivable .

Let the friendship be a song in the pasture, and let go of all your hostility attitude to others. Strech out your friendly hand, and seize the admirable frankness of youth.

To westerners, one can't be happy for being vulnerable to deceit. That's why 'naive' and 'innocence' don't fit in here.