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真實加拿大一号公路http://i.cbc.ca/1.3259658.1444169907!/fileImage/httpImage/image.jpg" border="0">_gen/derivatives/16x9_620/drivebc- ...公仔箱論壇$ U6 s; s$ Q' w; p% N9 V8 G& d
Pedestrian_A 發表於 2016-7-2 02:17 PM


真實加拿大一号公路http://i.cbc.ca/1.3259658.1444169907!/fileImage/httpImage/image.jpg" border="0">_gen/derivatives/16x9_620/drivebc- ...
Pedestrian_A 發表於 2016-7-2 02:17 PM




加拿大很多樹但也期望森林吸收掉人們無節制排放的二氧化碳。公仔箱論壇8 x. X8 T6 M( [( F% ?
SweetLemon 發表於 2016-7-14 10:34 AM公仔箱論壇7 E' b7 A: ?+ v2 g" |4 b
not enough trees in the city
www1.tvboxnow.com/ J2 R3 W5 y0 {/ l; E% H
tvb now,tvbnow,bttvb4 {/ x, k. l4 X$ a' M
No, I read that when the leaves fall it released CO2 back to nature.
I don't know its true or not.
SweetLemon 發表於 2016-7-14 08:05 PM
How many trees are needed?
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