必要条件

Nevertheless, in consideration of the very grave difficulties which would result from opening up the whole case again, the majority of the commission held that they might and should abide practically by the testimony of the official documents and especially by that of the minister I,yonne regarding the reality of the "subscription pure and simple", at the same time emphasizing anew this point as the essential basis and the condition sine qua non of peace.

不过，考虑到非常严重的困难，这将导致从开放整个案件再次，大部分委员会举行了，他们可能和应当遵循的几乎所的证词的正式文件，特别是由该部部长，我约纳就现实的&订阅单纯和简单&，在同一时间，重新强调这一点，作为必不可少的基础和必要条件的非和平。

Nevertheless, in consideration of the very grave difficulties which would result from opening up the whole case again, the majority of the commission held that they might and should abide practically by the testimony of the official documents and especially by that of the minister I,yonne regarding the reality of the "subscription pure and simple", at the same time emphasizing anew this point as the essential basis and the condition sine qua non of peace.

不过，考虑到非常严重的困难，这将导致从开放的整个案件再次，大多数委员会举行，他们可能，并应切实遵守的证词的正式文件，特别是由该部部长一，约讷就现实的&订阅纯粹和简单&，同时再次强调这一点的重要基础和必要条件的和平。

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。