作者有话要说：

给大家科普一下，一亩大约等于660平方米，文中的操场大约1300多平方米。

if

if you can keep your head when all about you

are losg theirs and bg it on you

if you can trt yourself when all n doubt you，

but ake allowance for their doubtg too

if you can wait and not be tired by waitg，

or beg lied about， dont deal lies

or beg hated， don't give way to hatg，

and yet don't look too good， nor talk too wise

if you can drea-and not ake dreas your aster

if you can thk-and not ake thoughts your ai，

if you can et with triuph and disaster

and treat those o ipostors jt the sa

if you can bear to hear the truth you ve spoken

isted by knaves to ake a trap for fools

or watch the thgs you gave your life to broken

and stoop and build ‘ e up orn-out tools，

if you can ake one heap of all your ngs

and risk it on one turn of pitch-and-toss

and lose， and start aga at your begngs

and never breathe a word about your loss

if you can force your heart and nerve and sew

to serve your turn long after they are gone，

and so hold on when there is nothg you

except the hich says to the： “hold on ！”

if you can talk with crowds and keep your virtue，