基本解释中間膨大的小圓柱同根派生 ballister相关词英汉例句Semi-recessed wheels are integrated in the back for easy transport and do not take up extra space when the Ballister is loaded in a truck. 裝在音箱背後的內嵌式腳輪，方便運輸，儅把音箱搬上車時，輪子可以藏在凹槽裡，節省空間。ballister更多例句