pre-exist
verb /ˌpriː ɪɡˈzɪst/
/ˌpriː ɪɡˈzɪst/
[intransitive]动词形式
| present simple I / you / we / they pre-exist | /ˌpriː ɪɡˈzɪst/ /ˌpriː ɪɡˈzɪst/ |
| he / she / it pre-exists | /ˌpriː ɪɡˈzɪsts/ /ˌpriː ɪɡˈzɪsts/ |
| past simple pre-existed | /ˌpriː ɪɡˈzɪstɪd/ /ˌpriː ɪɡˈzɪstɪd/ |
| past participle pre-existed | /ˌpriː ɪɡˈzɪstɪd/ /ˌpriː ɪɡˈzɪstɪd/ |
| -ing form pre-existing | /ˌpriː ɪɡˈzɪstɪŋ/ /ˌpriː ɪɡˈzɪstɪŋ/ |
- to exist from an earlier time
早先存在；在先出现 - a pre-existing medical condition
宿疾
- a pre-existing medical condition