水乳交融 交融:融合在一起。象水和乳汁融合在一起。比喻感情很融洽或結(jié)合十分緊密。
彼:那,對(duì)方;此:這,我方。不分這個(gè)和那個(gè)。形容關(guān)系密切,交情深厚。
[all is common;be on very intimate terms;with no distinction between what is one's own and what is another's] 形容關(guān)系很密切