Hypophysectomy before implantation terminates pregnancy and after the 44 th day of gestation causes abortion in goat.山羊与附植前切除下立脑可使妊娠终止,而在妊娠44天后切除则造成流产....
There has been a busy start to polling in today's local elections.今天地方选举的投票一开始就人头攒动。And all the time next spring's elections are drawing closer.明年春天的选举即将来临。The signs suggest that the elections will be non-viole...
Observers have recently found in the Universe giant voids about 500,000,000 light-years across.观察员最近在宇宙中发现了直径约5亿光年的巨型空洞。Small voids and openings occur between grains of soil.在土壤颗粒之间就有着许多微小的空隙和洞隙.Poor wetting would produc...