The first multiplexer is selectively coupled to the transmitter or the receiver in order to let the HSDI transceiver act as a source device or a sink device respectively.

第一复用器选择性地耦接于发射器或接收器，以使高速数字接口收发机作为来源装置或终端装置。

youdao

If you can't wait until the end of September (the touch is shipping by the 28th, if you believe the Apple Store), you can sink your teeth into one lucky critic's view of the new device.

ENGADGET: iPod touch gets its first review