单语范例（未经PONS编辑处理）
The quality of the file transfer is specified in terms of a long-term average bitrate for data and in terms of meeting deadlines when streaming.
en.wikipedia.org It uses a variety of audio codecs, ranging from low-bitrate formats that can be used over dialup modems, to high-fidelity formats for music.
en.wikipedia.org It is possible to let the tool encode the video in various quality levels, the resulting bitrate is increasing with quality.
en.wikipedia.org In digital radio systems, several variable bit-rate data streams are multiplexed together to a fixed bitrate transport stream by means of statistical multiplexing.
en.wikipedia.org The frame-level quantizer is either dynamically selected by the encoder to maintain a certain user-specified bitrate, or (much less commonly) directly specified by the user.
en.wikipedia.org