牢牢控制

keep a firm hand on

牢牢的英语翻译：

firmly; safely

控制的英语翻译：

control; dominate; desist; grasp; hold; manage; master; predominate; rein
rule
【计】 C; control; controls; dominance; gated; gating; governing
【医】 control; dirigation; encraty
【经】 check; command; control; controlling; cost control; dominantion
monitoring; regulate; rig