不过如前所述, 这些孢子也无法被环氧乙烷灭活.用英语怎么说？

不过如前所述, 这些孢子也无法被环氧乙烷灭活.

However, these were incapable of being inactivated ethylene oxide as stated previously.

however

adv. 不管到什么程度，无论如何，然而，可是；conj. 不管怎样；

例句
The fact remains that inflation, however you measure it, is unacceptably high...
必须承认，无论怎么衡量，通货膨胀率都高得难以接受。

these

adj. 这些的；pron. 这些；

例句
There's lots of money about these days for schemes like this.
近来这类计划资金充足。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

incapable

adj. 无能力的，不会的，不能的，[法]没有资格的，不舞之鹤；

例句
He is incapable of discriminating between a good idea and a terrible one...
他分不清主意的好坏。

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。

being

n. 存在，生物，人，要素，本质；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

inactivated

v. 使不活泼，阻止活动( inactivate的过去式和过去分词 )；

例句
Molluscicides are quickly inactivated by sunlight and adsorption to mud organic matter.
灭螺剂因阳光作用、泥土及有机物质的吸收会很快失效.

ethylene

n. 乙烯，乙撑；

例句
The blend of acrylate rubber ( ACM ) and ethylene propylene diene terpolymer ( EPDM ) was prepared.
以丙烯酸酯橡胶 ( ACM ) 和三元乙丙橡胶(EPDM ) 为主要原料制备共混材料.

oxide

n. [化]氧化物；

例句
Nitric oxide scavenger ( N - acetylcysteine ) could recover the inhibition effect of sodium nilroprusside.
ON清除剂N - 乙酰 半胱氨酸 能明显清除硝普钠的抑制效应.

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

stated

adj. 定期的，规定的，一定的；v. 规定( state的过去式和过去分词 )，陈述，确定，[法律]详述（案情等）；

例句
His second statement agrees with facts as stated by the other witnesses.
他的第二份供述与其他目击证人所陈述的事实相符。

previously

adv. 事先，以前，仓促，“previous”的派生；

例句
Spassky had never previously lost to his antagonist.
斯帕斯基以往从未输给过他的对手。