单词：retractable
retractable的用法和样例：
例句
- The house has a retractable staircase that lowers to the ground.这幢房子有一条缩回放到地面的楼梯。
词汇搭配
- retractable fin可收进舷侧鳍...
- retractable guide可撤导板
- retractable radiator收放式散热器,可伸缩...
- retractable antenna收缩式天线
- retractable probe可收起的受油探管...
- retractable wheel伸缩轮,收缩起重轮...
- retractable launcher收放式发射装置...
- retractable arbor能自由伸缩的芯棒...
- retractable undercarriage伸缩起落架
- telescopic望远镜式的
- folding可折叠的
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