in the absence or presence of PGE2 怎么翻译?

in the absence or presence of PGE2 怎么翻译? 英语翻译No information is provided about the presence or absence 英语翻译for the absence of怎么翻译?例如in the absence of 缺乏…时而for the in the absence of 怎么用 in the presence of animals in presence of 还是in the presence of对啊 in the absence of 造句 怎么翻in the absence of manifest error. be in absence of有没有the The total absence of light 翻译? 计算机翻译求解答S privilege: The presence of the S privilege in the Request the honor of the presence of you.这个要怎么翻译滴呀?