0 to stop something from happening or someone from doing something -- 阻止，妨礙；預防
[ + -ing verb ] His disability prevents him (from) driving. 他有殘疾，不能開車。
She would go over the accident again and again in her mind, wishing that she could somehow have prevented it.
A block in the pipe was preventing the water from coming through.
The law has done little to prevent racial discrimination and inequality.
Note that this phenomenon has a purely inertial character; viscous forces cannot prevent it, although these forces guarantee the space regularity of the solution.
Pragmatic randomized trial of antenatal intervention to prevent postnatal depression by reducing psychosocial risk factors.
An inefficient tax system could thus have survived if political rigidities prevented a ruler from changing it.
