1 General Descr iption 2 System Features 3 SD Memory Card System Concept 31 Read-Write Property 32 Supply Voltage 33 Card Capacity 34 Speed Class 35 Bus Topology 36 Bus Protocol 361 SD Bus 362 SPI Bus 37 SD Memory Card–Pins and Registers 4 SD Memory
1.abide by(=be faithful to ; obey)忠于；遵守。
2. be absent from…. 缺席，不在
3. absence of mind(=being absent-minded) 心不在焉
4. absorb(=take up the attention of)吸引…的注意力(被动语态)be absorbed i n 全神贯注于…近be engrossed in ; be lost in ; be rapt in ;be concentrated on
