There was widespread picketing of mines where work was continuing.
凡是在繼續開采的礦區，都設置了糾察隊。
柯林斯例句
" And my chaps were also there to prevent picketing!
“ 我的人也是防著女工們要攔廠!
子夜部分
" The reason why we got people in was to prevent the girls picketing ---- "
“ 我們叫了人是防備女工們攔廠的 —— ”
子夜部分
" We have to call people in to prevent the women picketing and stirring up trouble!
“ 我們叫了人來是防備女工鬧事!
子夜部分