kept a firm hold on造句

• He kept a firm hold on the old lady's arm as he helped her get off the bus
  他牢牢地握住老太太的手臂，扶她下了公共汽车。
• Mother kept a firm hold on her son's hands as he said goodby to her abroad
  "儿子向母亲告别到国外去时,母亲紧紧地拉住他的双手。
• They have kept a firm hold on their oil resources and their right to fix oil prices
  他们牢牢掌握他们的石油资源和确定油价的权利。