例句：
The rocket was launched in March 1980.
这枚火箭发射于1980年3月。
The satellite had been inactive since its launch two years ago.
该卫星自从两年前发射以来一直没起作用。
The new model will be launched in July.
新型号产品将在七月推出。
The police have launched a major operation against drug suppliers.
警方发动了一次打击毒贩的'大规模行动。
overnment has launched a new offensive against crime.
政府发动了新的打击犯罪攻势。