As of Feb. 26, the Samsung Frame TV is on sale at Amazon, down from $1,197.99 to $897.99. That's $300 off, and its lowest price so far this year as per camelcamelcamel.
'enum': ['red', 'blue', 'green', 'yellow', 'purple', 'orange'],
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（四）出于他人胁迫或者诱骗的；
existed = os.path.exists(OUT)。关于这个话题，51吃瓜提供了深入分析
Lex: FT's flagship investment column，这一点在Line官方版本下载中也有详细论述
Performance tracking