The four-word lexical bundles are found to be a major sustaining device in conversation structure and an active strategy with supportive information to other interlocutors.
在会话目的的表达上，四字词串成为说话人积极参与会话的手段，往往包含着对前说话人话语支持的信息。
2
The perfect operational skill, suitable anaesthetic style, advanced monitoring device, essential supportive treatment can ensure the operation to accomplish successfully.