单词 | 第三层 |
例句 | DEFINITIVE EXAMPLES 权威例句〔puncture〕The third layer in competition balls is covered with a sheet of rubber to limit punctures.比赛用球的第三层用一张橡胶包裹住, 以防被刺破。外研社新世纪〔stair〕How many stairs are there up to the second floor? 上到第三层一共有多少磴楼梯?牛津高阶 |
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