Foods and fluids are mixed in the stomach by its muscular contractions.通过胃部肌肉的收缩食物和流质在胃中混合。Contractions are much more common in speech than in writing.缩略词在口语里比在书写中常见得多.Muscle contractions are powered by the chemical aden...
They stood there,giving out the leaflets to the passers.他们站在那里,向过路人散发传单。The demonstrators distributed leaflets to passers.示威者向行人分发传单。free colour leaflets for distribution overseas向海外分发的免费彩色传单Leaflets giving details are a...
在生物学上,同种族生物数目越多,更加容易收到种族病毒的侵害.In biology a more homogeneous population is more susceptible to a genocidal plague.成年海豚企图杀死同种族的刚出生的小海豚.Adult tucuxi dolphins have been seen trying to kill a newborn calf of their own species...