这位美国领导人还补充道，乌克兰总统弗拉基米尔·泽连斯基不愿达成协议，尽管“普京已经准备好了”。
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你不能说完全不给孩子用，但是到点就得收起来，而且要服从管理，这个要形成家规。同时，父母亲也要去遵守，在孩子学习的时间，不要在旁边刷手机。中华民族的优良传统就是要从小家的家规开始做起。
Major thirds are worse in 12-TET. Recall that the major third you get from the overtone series is a frequency ratio of 5/4. In 12-TET, you make a major third by adding four semitones, which means that you multiply your frequency by the 12th root of 2 four times. That comes to 1.25992, which is noticeably higher than 5/4. Thirds in 12-TET are quite sharp compared to what your ears are expecting from natural harmonics.