Ozone is a highly reactive form of oxygen gas.是什么意思？

Ozone is a highly reactive form of oxygen gas.

臭氧是一种非常活跃的氧气形态。

ozone

n. [化]臭氧，清新空气；

例句
...chemical reactions that cause ozone destruction.
导致臭氧受到破坏的化学反应

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

highly

adv. 高度地，极，非常，非常赞许地；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

reactive

--

例句
More reactive are the heavier isotopes of hydrogen, deuterium and tritium.
更为活跃的是氢的较重同位素, 氘和氚.

form

n. 形状，形式，外形，方式，表

例句
A household radiator absorbs energy in the form of electric current and releases it in the form of heat.
家用取暖器吸收电流能量，再以热量的形式释放出来。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

oxygen

n. [化]氧，氧气；

例句
Blood is the medium in which oxygen is carried to all parts of the body...
血液是将氧气输送到人体各个部位的媒介。

gas

n. 气体，[矿业] 瓦斯，汽油，毒气；vt. 加油，毒（死）；vi. 加油，放出气体，空谈；int. 该死！（令人气愤的人应即被送毒气室处死）；

例句
Methane is often regarded as the second most important greenhouse gas after carbon dioxide.
甲烷常被认为是仅次于二氧化碳的重要温室气体。