[00:00.21]一加一等于几
[00:38.88]一加一等于二
[00:42.96]一加二等于几
[00:44.70]一加二等于三
[00:47.01]一加三等于几
[00:48.81]一加三等于四
[00:50.82]一加四等于几
[00:52.86]一加四等于五
[00:55.14]你来算一算
[00:59.28]二加一等于几
[01:02.97]我想说二加一等于三
[01:07.05]你说我算的对不对
[01:11.34]一加一等于几
[01:13.44]一加一等于二
[01:15.42]一加二等于几
[01:17.25]一加二等于三
[01:19.50]一加三等于几
[01:21.30]一加三等于四
[01:23.37]一加四等于几
[01:25.38]一加四等于五
[01:43.92]一加一等于几
[01:45.75]一加一等于二
[01:47.94]一加二等于几
[01:49.80]一加二等于三
[01:52.02]一加三等于几
[01:53.85]一加三等于四
[01:55.89]一加四等于几
[01:57.93]一加四等于五
[02:00.21]你来算一算
[02:04.38]二加一等于几
[02:08.07]我想说二加一等于三
[02:12.18]你说我算的对不对
[02:16.41]我们一起来学习
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