-
[听力文摘] 听力文摘第253期:是否真的存在零重力?Zero gravity
我们站立于地面上可以感受到重力，是因为地球本身的引力将我们拉向地心，但同时力又反作用于我们的双脚。2013-11-06 编辑：mike
-
[南瓜姐姐段子学单词] 南瓜姐姐段子学单词 第824期:gravity
gravity n. 重力，引力，严重性，庄严2019-11-16 编辑：Vicki
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
2013-11-06 编辑：mike
2019-11-16 编辑：Vicki
