I. pre-ex·ist [ˌpri:ɪgˈzɪst] 书 动词 不及物动词
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- präexistieren 技术用语
| I | pre-exist |
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| you | pre-exist |
| he/she/it | pre-exists |
| we | pre-exist |
| you | pre-exist |
| they | pre-exist |
| I | pre-existed |
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| you | pre-existed |
| he/she/it | pre-existed |
| we | pre-existed |
| you | pre-existed |
| they | pre-existed |
| I | have | pre-existed |
|---|---|---|
| you | have | pre-existed |
| he/she/it | has | pre-existed |
| we | have | pre-existed |
| you | have | pre-existed |
| they | have | pre-existed |
| I | had | pre-existed |
|---|---|---|
| you | had | pre-existed |
| he/she/it | had | pre-existed |
| we | had | pre-existed |
| you | had | pre-existed |
| they | had | pre-existed |
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单语范例（未经PONS编辑处理）
An understanding of the conventional patterns and stereotypes that pre-exist in a milieu provide the propagandist with material from which to build off.
en.wikipedia.org Reality was still unfolding; it didn't pre-exist, it emerged.
www.thestar.com Another area for research is the clustering of double strand breaks: whether there is a transport mechanism, and whether the repair centres pre-exist.
www.world-nuclear-news.org