2018年8月29日星期三

Chinese scientists create fire-retardant artificial wood



from New China TV https://www.youtube.com/watch?v=Q7pwQTob0_s
--------
More tips about learning Chinese
http://hellolearnchinese.com

没有评论:

发表评论

Time-lapse: Beautiful cacti bloom before your eyes

from New China TV https://www.youtube.com/watch?v=LWntHYtd5Vo