n. amniocentesis ; amniotomy
羊膜穿刺术是出生前检测非整倍体的金标准。
Amniocentesis is the standard prenatal detection procedure for aneuploidy.
然而，羊膜穿刺术最艰难的部分还是等待结果的时候，那要熬两周的时间呢。
The hardest part of the amnio, though, is waiting for the results, which take two weeks to process.
尽管这些老方法绝不是万无一失的，但它们绝对比后来的羊膜穿刺术、超声有趣。
Even though these old wives' tales are far from foolproof, they are certainly more fun than their more reliable successors, amniocentesis and ultrasound.
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