to officially force someone to leave a place or organization because of their bad behaviour （官方）强迫（某人）离开；驱逐；开除 | They have no legal power to expel a party member. 他们没有合法权力开除一位党员。 |
| expel sb from sth The police were sent to expel the demonstrators from public buildings. 警察被派来把示威游行者从公共建筑物前赶走。 |
| | 1a | to force a student to leave a school permanently 强迫退学；开除 | | expel sb for sth He was expelled for threatening a teacher with a knife. 他因为拿刀子威胁老师被开除学籍。 | |
| | 1b | to force someone to leave a foreign country , especially for political reasons or for breaking the law （尤因政治原因或触犯法律等而）驱逐…出境 | | The authorities are threatening to expel all foreign diplomats. 当局威胁说要驱逐所有的外交官。 | | expel sb from sth Journalists who reported on the demonstration were expelled from the country. 对游行示威进行过报道的记者都遭到了该国的驱逐。 | |