yán / jiū / rén / yuán / bǐ / jiào / le / zhèng / wèi / hé / yì / wèi / zǔ / zhī / de / shēng / zhǎng / qíng / kuàng研究人员比较了正位和异位组织的生长情况。The researchers compared the growth of orthotopic and ectopic tissues.