latch on

柯林斯词典

1. PHRASAL VERB If someone latches onto a person or an idea or latches on, they become very interested in the person or idea, often finding them so useful that they do not want to leave them. 缠住不放[非正式]
Rob had latched onto me. He followed me around and sat beside me at lunch. 罗布缠着我不放。他到处跟着我，吃午饭时坐在我旁边。
2. PHRASAL VERB If one thing latches onto another, or if it latches on, it attaches itself to it and becomes part of it. 黏附在…上
These are substances which specifically latch onto the protein on the cell membrane. 这些是专门黏附在细胞膜蛋白质上的物质。