Portable refrigerators are so useful and popular these days.
Xem thêmIn the 1990s, with such companies as Dell, Apple and Gateway competing to make useful portable computers, laptop technology rapidly advanced.
Xem thêmLaptops are battery powered computers that are more portable than desktops, allowing you to use them almost anywhere.
Xem thêmTablet computers or tablets are handheld computers that are even more portable than laptops.
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