| 词汇 | opportunistic |
| 释义 | op·por·tun·is·ticBrE /ˌɒpətjuːˈnɪstɪk/ NAmE /ˌɑːpərtuːˈnɪstɪk/ adjective (disapproving ) = opportunist[only before noun ](medical医学) harmful to people whose immune systemhas been made weak by disease or drugs 机会致病性的（对免疫系统差的人有害）◆ an opportunistic infection 机会性感染 |
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