fasten on/upon 基本例句 系上; 扎上; 把…装上; 集中于; 强加于; 纠缠住; 握住; 抓牢 I don't want to intrude my opinionuponyou.我不想把我的意见强加于你。 I slip my hand in his and hold on tight.我将手伸给他，紧紧握住他的手。 He kept a tight grip on her arm.他紧紧握住她的胳膊。 He kept a fast hold on the rope.他紧紧抓牢绳子。