firm up the detailsv exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
informal (confirm, decide)
确定 què dìng
敲定(合同等)细节 qiāo dìng ( hé tóng děng ) xì jié
The two sides are meeting to firm up the details of the agreement.