But hearing and understanding sounds from the human body requires a trained ear.

但是听到并听懂人体的声音需要（医生）耳朵“经验丰富”。

However, this is the first time human eggs have been developed outside the human body from their earliest stage to full maturity.

然而，这是人类卵子首次在人体外从最初阶段发育至完全成熟。

" We want to measure everything that can be extracted from the human body over a lifetime, " he says.

“我们想要测量一生中可以从人体中提取的所有东西，”他说。