窗口將在 5秒后自動關閉.
conj.
除非她先道歉，否則我不道歉。
prep.
unless and until
除非他親口對我說，否則我絕不相信。
同義參見:
以上來源於：《英漢大辭典》
以上來源於：《簡明牛津英語詞典》
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閱讀Part1
We will offer you free access to the gym as well as other outdoor facilities ______ you have been a frequent customer to our hotel.
(A) until
(B) once
(C) since
(D) unless
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