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1、announce
宣布;宣告;公布
He will announce tonight that he is resigning from office.
他将于今晚宣布辞职。
She was planning to announce her engagement to Peter.
她正计划宣布她和彼得订婚一事。
大声宣告，郑重地说（尤指令人不快之事）
Peter announced that he had no intention of wasting his time at any university.
彼得宣称他无意在任何一所大学浪费时间。
'I'm having a bath and going to bed,' she announced, and left the room.
“我要洗个澡然后上床睡觉，”她大声说完便离开了房间。
（机场或火车站工作人员通过扬声器）播报，通知
Station staff announced the arrival of the train over the tannoy.
车站工作人员通过广播告知火车到站了。
They announced his plane was delayed.
广播通知他所乘的航班晚点了。
2、launch
发射（火箭、导弹或卫星）
NASA plans to launch a satellite to study cosmic rays.
美国国家航空航天局计划发射一颗卫星上天，对宇宙射线进行研究。
A Delta II rocket was launched from Cape Canaveral early this morning.
今天一早，一枚“德尔塔”Ⅱ型火箭在卡纳维拉尔角发射升空。
开展（重大活动）；发起，发动（军事袭击等）
Heavy fighting has been going on after the guerrillas had launched their offensive.
游击队发起攻击后，激烈的战斗一直持续不断。
The police have launched an investigation into the incident.
警方已对该事件展开调查。
（在江河、湖泊和港口载人的）大型汽艇
The captain was on the deck of the launch, steadying the boat for the pilot.
船长站在汽艇甲板上为领航员保向。
We'll make a trip by launch to White Island.
我们将乘汽艇到怀特岛。
