Undertamping
夯實不足
??? 情景例句
The advanced class starts at ten o'clock.
高級健身課十點鐘開始。
An ox is taken by the horns,and the man by the tongue.
牛因角被執，人因舌陷身。
One third of this area is covered with forest.
這一地區三分之一的地方都是森林。