某事

Be the last to do sth.

是最后一次做某事

Be most likely to do sth.

最有可能做某事

To play be happy to do sth.

是高兴做某事的意思

Prepare to do sth.和be prepared to do sth.

都是准备做某事的意思吗？？？

Be under an ~ to do sth.

有做某事的义务

We are able to speak English. be unable to do sth.

不能做某事我们不能在9点钟之前到。

Be unable to do sth.

不能够做某事

We use 'to be used to doing' to say that something is normal, not unusual.

我们用"to be used to doing"这个短语来表达某事是正常的，常见的，没什么不正常的。

Be use to doing sth.

习惯于做某事

To be used to doing 'Used to do' is different from 'to be used to doing' and 'to get used to doing' We use 'to be used to doing' to say that something is normal, not unusual.

我们用"to be used to doing"这个短语来表达某事是正常的，常见的，没什么

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。