when is the activity这句话什么意思

Activity is the only road knowledge 这句话是谁说的? when the time is over,we can follow zhe time这句话什么意思 activity什么意思 when the weather is sunny ?.什么意思 谁知道Activity is the only road to knowledge的意思? The,fucking,duck,is,a,fucker这句话什么意思 The boy is fat,but.这句话什么意思 where is the love这句话什么意思 memory test activity什么意思 When The World Let You Know Love(江湖告急)这句话什么意思,精辟一点的 I want travel around the world when l grow up./瓢虫,这句话什么意思 When crossing the road, you can't be too careful.这句话什么意思?