Phase A：瀏覽器語音辨識＋逐詞比對。建議安靜環境；辨識可能經瀏覽器雲端處理。
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Target sentence · pattern:hypothesis-conditions-possibility-5
I won't buy that new DJI remote controller unless they offer a substantial early-bird discount.
除非他們提供大幅度的早鳥優惠，否則我不會買那款新的 DJI 遙控器。
提示：句型：Unless...