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Sim card
01
SIM卡
a small, removable card that stores data for one's mobile device and identifies one to the network
例子
Each phone line requires its own SIM card to connect to the network.
She inserted the new SIM card into her phone and activated it with her provider.
When she upgraded her phone, she transferred her SIM card to keep the same number.
He swapped his SIM card when he traveled abroad to avoid roaming charges.
The phone wouldn't recognize the SIM card, so he had to try another one.
