粉笔

"A piece of chalk or chalklike substance in crayon form, used for marking on a blackboard or other surface."

一支粉笔或带颜色的粉笔状物，用以在黑板上或其他物体表面作标记。

My, my name is written out there in chalk. You know, you can't just erase chalk.

我的名字用粉笔写在外面，你不能把粉笔擦掉的。

Years, teachers with chalk on the blackboard one left a knowledge point, this end, the white chalk out their contribution to their body.

长年累月，老师们拿着粉笔在黑板上留下了一个又一个知识点，为此，洁白的粉笔们贡献出了它们的身躯。

Of the remaining chalks is blue and the rest is white.

蓝色粉笔占其余的，剩下的都是白色粉笔。

Matching has Products chalk dust, chalk and eraser folder.

配套产品有微尘粉笔、粉笔夹及板擦。

Chalk and blackboard for a dramatic friction, instant, a pieces of chalk into the "dust", and some remain in the spell of the Chinese characters on the blackboard, and some missing sections.

粉笔与黑板进行着剧烈的摩擦，顷刻间，一支支粉笔化作了&微尘&，有的留在黑板上拼成了汉字，有的款款下落。

However, this is an ordinary piece of chalk, the process of making some quite complicated, and made a first Cretaceous limestone, chalk and then add water, stirring, stirring evenly, and then poured into the model so that it solidified, it can be made of a pieces of chalk.

但是，就是一支如此普通的粉笔，制作的过程倒也有些繁琐，得先将石灰岩制成白垩，再将白垩加水搅拌，搅拌均匀后，再倒入模型中使其凝固，这样才能够制成一支粉笔。

Drop a piece of chalk into a glass of vinegar if you need a demonstration of the general worry: the chalk will begin dissolving immediately.

如果你需要实验证明，可以把一小段粉笔丢进醋里，粉笔会立刻开始溶解。

White chalk powder dyed your hair dark, it is chalk powder Mody?

粉笔灰染白了你黝黑的头发，那是粉笔灰么？

"Come in," said the wise man, and there Gebhart found him sitting in the midst of his books and bottles and diagrams and dust and chemicals and cobwebs, making strange figures upon the table with jackstraws and a piece of chalk--for your true wise man can squeeze more learning out of jackstraws and a piece of chalk than we common folk can get out of all the books in the world.

法师说，&进来。&进了门，格布哈特见他坐在书堆中，前后左右都是瓶子、图表、灰尘、化学品以及蜘蛛网。他正在桌上绘画各种奇怪的图形，用的是一只粉笔，几根细木杆–咱这法师是一位真正的法师，靠一只粉笔几根细杆学来的，比咱们凡夫俗子读破万卷书学来的还要多。

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。