| 单词 | pre-exist |
| 释义 | pre-existBrE /ˌpriː ɪɡˈzɪst/ NAmE /ˌpriː ɪɡˈzɪst/ verb present simple - I / you / we / they pre-existBrE /ˌpriː ɪɡˈzɪst/ NAmE /ˌpriː ɪɡˈzɪst/ present simple - he / she / it pre-existsBrE /ˌpriː ɪkˈzɪsts/ NAmE /ˌpriː ɪkˈzɪsts/ past simple pre-existedBrE /ˌpriː ɪkˈzɪstɪd/ NAmE /ˌpriː ɪkˈzɪstɪd/ past participle pre-existedBrE /ˌpriː ɪkˈzɪstɪd/ NAmE /ˌpriː ɪkˈzɪstɪd/ -ing form pre-existingBrE /ˌpriː ɪɡˈzɪstɪŋ/ NAmE /ˌpriː ɪɡˈzɪstɪŋ/ [I ]to exist from an earlier time 早先存在；在先出现◆ a pre -existing medical condition 宿疾▸ pre-existentBrE /ˌpriː ɪɡˈzɪstənt/ NAmE /ˌpriː ɪɡˈzɪstənt/ adjective |
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