... 材料鉴别 material identification 材料交换 stores swap 材料结构差异 material mix variance ...
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stores swap
商店交换
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Then Safaricom had to get its millions of customers to swap out their SIM cards by picking up new ones from their local participating stores.
FORBES: How Africans Shop With Their Cellphones
应用推荐
模块上移
模块下移
不移动