某事

Be terrified of n./doing sth.

对做某事心存恐惧

To be I need to do sth.

我需要做某事。

Be the first to do sth.

是第一次做某事

I think it would be a good idea to do sth.

我想干某事是个好主意。

Be first….to do sth.

第一个做某事的

Be important to do sth.

重要的是做某事。

To 28. be made to do sth.

被用来做某事 30。

Be difficult to do sth.

做某事是困难的。

Be the last one to do sth.

最后一个做某事

Be hard for sb. to do sth.

对某人来说，做某事很难。

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。