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[每天听一点新闻] 每天听一点新闻(MP3+中英字幕) 第77期:科学家挽救斑马同类物种
在南非开普敦外,科学家正在通过“选择性繁殖”挽救灭绝物种。近日经科学家证实,通过DNA检测,19世纪末灭绝的白氏斑马为平原斑马的亚种。通过与平原斑马相比较,白氏斑马的下半身少了几条条纹。2020-09-16 编辑:wendy
Severity: Notice
Message: Memcache::connect(): Server 127.0.0.1 (tcp 11211, udp 0) failed with: Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
2020-09-16 编辑:wendy