窗口將在 5秒后自動關閉.
n.
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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文法測驗
When you enter a building, be sure to look behind you and hold the door open for someone coming through the same door. It is a common ______ in many cultures.
(A) process
(B) courtesy
(C) acceptance
(D) operation
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