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....
Ink particles attach themselves to air bubbles and rise to the surface.墨汁颗粒附着在气泡上，浮到表面上。Under certain conditions, electrons can behave like waves rather than particles.在一定条件下，电子可以作波状运动，而不是粒子状运动。Small particles adhere to ...
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...
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...