半便士

At the time of Bost's death, tuppence bought nearly half a sheep, and it was an Eton tradition, dating back to the reign of Henry VI, that collegers were to be fed no meat except mutton.

在博斯特去世的那个时代，两便士几乎可以买到半头羊。在伊顿公学有一个传统可以追溯到亨利六世朝代，那就是住校生除了羊肉不供给其他的肉食。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。