empty sac造句

例句与造句

1. The dead fetus, the failed twin, the forever-unknowable child, had vanished, leaving behind, like a cast-of jacket, its empty sac.
2. An anembryonic pregnancy ( also called an " empty sac " or " blighted ovum " ) is a condition where the gestational sac develops normally, while the embryonic part of the pregnancy is either absent or stops growing very early.
3. It's difficult to find empty sac in a sentence. 用empty sac造句挺难的