The memory expansion cards are useful adjuncts to the computer.

内存扩充卡是计算机很有用的附件。

《牛津词典》

SDIO expansion CARDS no longer supported.

sdio扩展卡不再支持。

youdao

On the inside of the case, they are connected to expansion cards.

在其机箱内部，与扩展卡连接。

youdao

The device has enough internal memory to hold more than 1, 000 standard e-books, says Sony, and it has expansion slots for memory cards.

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It's not all bad: the removable cover offers up access to the battery, and this is also the first Windows Phone 8 handset to arrive with microSD expansion in tow (supporting cards as large as 64GB), meaning more leeway after you've filled up the 8 gigs of built-in space.

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Other specs include two USB ports (one 2.0, one 3.0), HDMI, Beats Audio, WiDi and expansion slots for both microSD and full SD cards.

ENGADGET