词汇	define channel
释义	define channel 定义通道
随便看	presentation of results presentation of self presentation of teaching process Presentation of the Candidate Cities presentation of the cheque presentation of the goods presentation of the mine Pressure Presentation of umbilical cord presentation on a screen Presentation on product or service presentation options presentation order presentation pack presentation package presentation parameter presentation pdu and primitives presentation position presentation profile presentation program presentation protocol presentation protocol control information presentation protocol data unit presentation-qualities presentation quality presentation-quality