某事

Have no trouble in doing sth.

做某事没有麻烦

Have no trouble in doing sth .

做某事没困难

Sb. have some difficulty/ trouble in doing sth.

做某事没优点/作用。

I have some trouble in doig sth.

我做某事感到难。

Instead of merely dipping your toes into the change you'd like to make, you dive into it headfirst.

在你准备对某事付诸行动或者将对自己的生活谋求改变的时候，请先慢点动手，先用脑子好好想想。

Can you help sb. do sth?

你能帮助某人做某事么？

Help sb. to do sth.

帮助某人做某事。。。

Help sb. do/with sth.

帮助某人做某事 2。

Help sb to do/with sth.

帮助某人做某事。

Help sb not to do sth.

"帮助某人不做某事"

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。