Underwound
欠旋（沿右手螺旋相反方向捻动）
🗣️ 情景例句
Radiation exposure can damage your genes and make them vulnerable to mutation.
辐射会破坏你的基因组织，使它们突变。
I took 6 boxes of biscuits.
我拿了六盒饼干。
I determined to lodge a complaint as soon as we arrived.
我决定到目的地就给铁路部门提意见。