... bone up 抓紧温习, 突击钻研... chock up 塞满 jampack 使挤满 ...
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... block chock 坞墩垫 chock up 塞满 ; 阻塞 chock liner 机座垫板 ...
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窒息；堵塞；阻塞 chock up 因激动等说不出话来 3. The first tunnels were opened in 1863 and were just beneath the surface of the ground.
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