Try to speak more圆 Note: o check in:上飞机前领登机牌( boarding pass) o see somebody off: say goodbye to someone turn up: appear; arrive o let somebody down disappoint somebody o he's nowhere to be found: People can not find o Oh, that sounds interesting: Sue shows reserved disagreement in opinionTry to speak more Note:  check in: 上飞机前领登机牌 (boarding pass)  see somebody off: say goodbye to someone  turn up: appear; arrive  let somebody down: disappoint somebody  he’s nowhere to be found: People can not find him.  Oh, that sounds interesting: Sue shows reserved disagreement in opinion