1. 发射(火箭、导弹或卫星)

To launch a rocket, missile, or satellite means to send it into the air or into space.

e.g.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。

e.g.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。

2. 使(船)下水；使(新船)首次下水

To launch a ship or a boat means to put it into water, often for the first time after it has been built.

launch是什么意思

e.g.There was no time to launch the lifeboats because the ferry capsized with such alarming speed.

渡轮瞬间倾覆，根本没时间放救生艇下水。

3. 开展(重大活动)；发起，发动(军事袭击等)

To launch a large and important activity, for example a military attack, means to start it.

e.g.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。

e.g.The police have launched an investigation into the incident...

警方已对该事件展开调查。

4. 推出，发布(新产品)

If a company launches a new product, it makes it available to the public.

e.g.Crabtree & Evelyn has just launched a new jam, Worcesterberry Preserve...

瑰珀翠刚推出一款新果酱——伍斯特浆果果酱。

e.g.Marks & Spencer recently hired model Linda Evangelista to launch its new range.

玛莎百货最近聘请模特儿琳达·埃万杰利斯塔为其发布新系列产品。

5. (在江河、湖泊和港口载人的)大型汽艇

A launch is a large motorboat that is used for carrying people on rivers and lakes and in harbours.

e.g.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。

e.g.We'll make a trip by launch to White Island.

我们将乘汽艇到怀特岛。