柯林斯詞典retractable /r??tr?kt?b?l/ 1. ADJ A retractable part of a machine or a building can be moved inward or backward. 可縮進的; 伸縮自如的[usu ADJ n] A 20,000-seat arena with a retractable roof is planned. 一個可容納2萬名觀眾、帶伸縮頂棚的競技場正在規(guī)劃中。 返回 retractable