so was born the echo sounding apparatus 所以产生了声音仪器
问题描述：
so was born the echo sounding apparatus 所以产生了声音仪器
请问这句话 主语是谁?was born 在这里又是神马意思
答
这个是倒装句,
the echo sounding apparatus 是主语
was born 是产生的意思呗如何认出一个句子是倒桩呢so 开头，谓语倒到前面，就是了