knock head against 中文意思是什麼
knock head against
解釋
有效地抵抗-
Please, ladies and gentlemen, don ' t hold your head high, or you might knock your head against some protruding stalactite
女士們,先生們,請別高昂著頭,否則你的頭可能撞倒突出的鐘乳石上。
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