我告诉他我又不是他妈，不知道买什么样的，他笑起来，然后告诉我说“请买恒适30号的。”
When I told him I wasn't his mother and didn't know what to get, he kind of laughed, and then said "Hanes thirty please."
youdao
宇宙普适常数并非“恒”量？
Universal constants not so constant?
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