采访马怀龙，老马先跟记者“约法三章”：“第一，不能当着老人的面提我什么时候退休；第二，不能问我每月给老人花多少钱；第三，不能问我家住哪里。”面对记者满脸的疑惑，马怀龙取出两大串、一共49把钥匙，领着我们开始了一天的“串门”。
Objects have a class, and a fixed size based on their class.
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"It was a lot of trial and error."
Luce said he was "reserving judgement" whether there would be a similar policy for new cars until all responses to the consultation had been reviewed.