一种

Hydrogen is a very light gas that can help balloons fly high in the sky.

氢气是一种非常轻气体，可以帮助气球在天空中飞得很高。

The dark matter in the universe remains a mysterious substance.

宇宙中暗物质仍然是一种神秘物质。

Silicon is a semiconductor used in making computer chips.

硅是一种半导体，用于制造电脑芯片。

The light grey sky was a very neutral color before the rain.

下雨前，浅天空是一种非常中性颜。

The sky appeared a very neutral color before the rain.

下雨前，天空呈现一种非常中性颜。

This is a new adsorption phenomenon showing the complexity of murexide adsorption.

这是一种新吸附现象,表明了紫脲酸铵吸附过程复杂性,对其机理进行了讨.

There was a strong feeling of fellowship amongst the members of the team.

那个队各个队员之间有一种强烈队友情谊。

Any of several related plants, especially those of the genera Amorpha or Baptisia.

紫穗槐属任何一种植物，具有奇数羽状叶和紫穗状花。

Conclusion Mepivacaine is an effective, safe and reliable anesthetic agent for dentistry and oral surgery.

结甲哌卡因是一种安全可靠、麻醉效果好用局部麻醉剂。

We imagine using an anticatalyst to "freeze out" any chemical reactions in the system.

可想象利用一种反催化剂使体系内任意化学反应“冻结”。

A peculiar austerity marked his judgments of modern life.

他对现代生活批评带着一种特殊苛刻。

Cutting-rubbing mill is advanced new model special equipment for aciform wollastonite.

剪搓磨是一种先进、新型生产针状硅石粉专用设备。

L-canavanine, the analog of L-arginine ,is a natural non-protein amino acid.

刀豆氨酸是一种天然非蛋白质氨基酸,L-精氨酸类似物。

The woods have an aura of mystery.

林子里有一种神秘气氛。

The opera was an aural as well as a visual delight.

这部歌剧对于听觉和视觉都是一种享受。

The author's style is spare and elegant.

这个作者有一种不加渲染优雅风格。

Preconditioned con- jugate gradient algorithm is a fast and accurate computational algorithm.

预条件共轭梯度法是一种精确并且收敛迅速计算方法。

Amplifier is electrical device which make sounds louder.

扩音器是一种使声音放大电气装置。

It's a stigma to ask for money.

要钱是一种耻辱。

Ketohexose A ketose SUGAR with six carbon atoms, e.g. fructose.

一种六碳酮糖。例如果糖。