| 释义 |
DEFINITIVE EXAMPLES 权威例句〔conceptus〕The product of conception at any point between fertilization and birth. It includes the embryo or the fetus as well as the extraembryonic membranes.胚胎：从受精到出生期间任一阶段产物的通称，它包括了合子或胎儿甚至胚胎膜美国传统〔fertilization〕The average length of time from fertilization until birth is about 266 days.从受精到出生, 平均需要约266 天。外研社新世纪 |