latch on

柯林斯詞典

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. 纏住不放[非正式]
Rob had latched onto me. He followed me around and sat beside me at lunch. 羅佈纏著我不放。他到処跟著我，喫午飯時(shí)坐在我旁邊。
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. 這些是專門(mén)黏附在細(xì)胞膜蛋白質(zhì)上的物質(zhì)。