正方形地

For a long while she went on sitting, watching the series of retreating candles reflected in the looking-glasses, and expecting (in accordance with the tales she had heard) at one minute to see a coffin, at the next to see him, Prince Andrey, in the furthest, dimmest, indistinct square.

她长久地坐着，从镜中观看一排逐渐消逝的蜡烛，她推测（根据她听见的故事来设想），在末了融入一个模糊不清的正方形的烛光中，时而瞧见一口棺材，时而瞧见他——安德烈公爵。

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。