[launched]launched英语

1句子意思呢？1Is it her deskmate to on duty tomorrow？2Ann sat down，took out a book and began to read I finished writing my composition，I handed it to our teacher2将下列词组译成英语 1。

vt发动，推出发射 n发射，下水，投产。

当然有launch用作及物动词时常作“使下水”解，后面常接船客轮海轮等之类的名词，多用于被动结构。

这句话怎么分析句子结构呢，我想知道launched 和that分别充当什么句子成分 回答1launched by the 19thcentury department stores that offered “vast arrays of goods in an elegant atmosphere过去分词短语作。