The academic year commences at the beginning of October...学年于10月初开始。The academic year commences at the beginning of October.学年于10月初开始。These substances are slowly depleted as the embryo commences to grow.随着胚开始生长,这些物质也慢慢用尽...
Microscopic examination of a cell's chromo-somes can reveal the sex of the fetus.利用显微镜检查细胞染色体可以发现胎儿的性别。For traditional chromo - thermometer, the operation wavelength is determined by interferential filter.传统的比色测温仪由干...