粉笔

He and Michael dashed about, calling measurements to one another and chalking strange signs in the places where they had earlier put up metal brackets.

他和马鲁克跑来跑去，彼此喊着一些量好的尺寸，然后在他们以前用金属架固定的地方用粉笔画上奇怪的符号。

Smith = Do you want me to get some chalks for you, Mr.

史密斯先生，我给你拿点粉笔来，好吗？

As a student,we can see the chalks everyday.

作为学生，我们每天都能看到粉笔

There are some chalks in the box.

在盒子里有一些粉笔 3。

I get him to fetch some chalks.

我叫他去取些粉笔回来。

There are different colors of chalks .

有不同颜色的粉笔。

Either she or I am going to fetch some chalks.

不是她，就是我去拿些粉笔。

We are almost running out of the chalks.

我们粉笔快用完了。

Ill you please fetch some chalks for me?

请你给我拿些粉笔，好吗？

There are a few chalks in the box.

盒子里有一些粉笔。

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。