Upload
lu-cheng
View
308
Download
1
Embed Size (px)
Citation preview
Lu Cheng
we know……
Science & technology is a
Also……
Fortunately……
“初见煤端时,毒气灼人,有将巨
竹凿去中节,尖锐其末,插人炭
中,其毒烟从竹中透上”;采煤时,
“其上支板,以防压崩耳。凡煤炭取
空而后,以土填实其井”
Song Ying-xing( Ming Dynasty )
(in Chinese)
in front of buildings of the Forbidden CityCapture rainwater to prepare to extinguish fire
But
We still faced with severe
All of us
should learn, study and make it
So