to attend a meeting or class without participating actively
参加会议或课程而不积极参与 (cānjiā huìyì huò kèchéng ér bù jījí cānyù)
"He was allowed to sit in on the meeting as an observer."
"他被允许作为观察员参加会议。" (Tā bèi yǔnxǔ zuòwéi guāncháyuán cānjiā huìyì)
to explore or see what is nearby; to sightsee
to suddenly express anger or criticize someone strongly
to set suggestions aside for future review
to enter text or data using a keyboard
to eat too much of something
to recover emotionally from pain or sadness
