常见例句雙語例句The hook was clamped by two screw nuts on the screw, and these makes up of the retractor finally.不鏽鋼絲拉鉤經兩個螺母夾持固定在磁力底座的螺栓上，組成簡易的磁力底座拉鉤；d.wanfangdata.com.cn 返回 hook retractor