emulatorn.
英 'emjʊleɪtə | 美 'ɛmjuletɚ
中文n. 仿真器，模拟器；竞争者
词根词源
emulator (n.)1580s, "rival, competitor," from Latin aemulator "a zealous imitator, imitative rival," agent noun from aemulari "to rival" (see emulation). The meaning "imitative rival" in English is from 1650s.
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