I am not that strong是什么意思

i am not that It's when I'm weak that I am strong是什么意思 I am not that girl .am I It’s when I’m weak that I am strong I am girl wHo is not strong and very weak It is when I am weak that Iam strong I am not sure是什么意思 I am not available是什么意思? I am not afraid是什么意思 am sorry that I did not make it that day.这段英文是什么意思? This sure is light,because I'm not that strong! I never thought that my heart was not so strong