粉笔

Can you give me some chalk?

你能给我一些粉笔吗？

He was asked to chalk his name on the blackboard.

他被叫去把他的名字用粉笔写在黑板上。

And I want a large box of chalk, too.

我还想要一大盒粉笔。

She chalked the day's menu on the board.

她把当天的菜单用粉笔写在黑板上。

He chalked out a simple plan of the new building.

他用粉笔勾画了新大楼的简图。

But when they came to it, they saw five or six houses were chalked in the same manner.

但是他们到时，却看到有五、六幢房子上都有同样的粉笔记号。

The day's opening and closing prices are chalked on a blackboard.

当天的开盘价和收盘价都用粉笔写在黑板上。

And yet, they were all exactly alike. Every one of them was chalky pale,the palest of all the students living in this sunless town.

他们都像粉笔一样苍白，比生活在这个缺乏阳光的小镇里的任何学生都要苍白。

Inside the source apply color to develop process in the tooth in formative of, such as four wreath vegetables deposition is in the tooth essence, will make tooth yellow, brown or dark gray, be called four wreaths plain tooths;If containing fluorine in the drinking water is excessive, may also cause fluorine spot tooth, the tooth noodles presents a white chalk color, the palm tree brown spot piece;If the tooth nerve is bad clay-cold, hemoglobin and germ resolve an outcome to combine to also make tooth black.

内源性着色是在牙齿发育过程中形成的，如四环素沉积在牙本质内，就会使得牙齿变成黄色、棕色或暗灰色，称为四环素牙；如果饮用水中含氟过多，也可能导致氟斑牙，牙面呈白粉笔色、棕褐色斑块；如果牙神经坏死后，血色素与细菌分解产物结合也可使牙齿变黑。

He also had the cobbler lead him to the house and marked the house in red chalk.

他也叫补鞋匠带他到凯辛家，并在上面用红色粉笔做记号。

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。