Amazon’s gift card is a physical one that ships with the phone; Best Buy’s is a digital gift card that will be sent to your email after your preorder is fulfilled. At Amazon, instead of the gift card, you also have the option of choosing a free pair of Pixel Buds 2a when you preorder. They are our favorite earbuds, but you probably don’t need them if you already have decent headphones.
// 步骤2：找初始右边界（最后一个破坏升序的位置）
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received too much information, hit C-c C-p which jumps you to the top
（四）出于他人胁迫或者诱骗的；