| 释义 |
sub.sti.tu.tionH.sQb7stI5tjU:7F[n, $-5tU:-n代替Scientists believe that substitution of metals by new composite materials still has a long way to go. [U]科学家认为用新的复合材料代替金属还需很长时间。It looks as though the coach is going to make a substitution (= change one player for another in the game). [C]教练看上去好像要换队员了。
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