by (sheer) force/weight of numbers

(纯粹)凭借数量上的优势

The power, influence, or advantage achieved by having large number of people or things acting together.

由大量的人或物共同起作用而获得的权力、影响或优势。

The crowd managed to force its way in by sheer weight of numbers.

这群人依靠人多势众强行挤了进来。

They won the argument by sheer weight of numbers.

他们纯粹靠人多势众在争论中获胜。