OpenAI深夜祭出GPT-5.4，暴击Claude，原生操控电脑，打工人悬了
Medium (5 to 6 out of 10)
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Speech recognition helps with pronunciation, while offline downloads let you practice mid-flight or during a commute. Progress syncs across phone and desktop, so learning doesn’t depend on one device. Instead of cramming a phrasebook before departure, you build familiarity over time — enough to understand replies, not just deliver rehearsed lines.