hold-down ring压紧环
top hold-down上部压板
hold-down finger防止上顶的爪簧
hold-down plate压板;翻译
hydraulic hold-down水力锚
Hold You Down挺我
Hold-Down Plates填料压盘
hold-down stud压紧双头螺栓
hold-down chain压紧链
PHRASAL VERB（动词词组） If you hold down a job or a place on a team, you manage to keep it. 保住 (工作或地位)
He never could hold down a job.
他从来就保不住自己的工作。
PHRASAL VERB（动词词组） If you hold someone down, you keep them under control and do not allow them to have much freedom or power or many rights. 压制
Everyone thinks there is some vast conspiracy wanting to hold down the younger generation.
人人都认为有个要压制年轻一代的大阴谋。