1. Poorer ones stop developing, so only the best ones make ft to dayfive blastocysts.
较差的卵泡发育停止 所以只有 最好的卵泡发育到第5天
2. It will take three hours for the transporter to cover the 15 miles up to the 16,500 ft high plateau.
运输工作需要 耗时三小时行走二十四千米 抵达海拔五千米的高原
