Shuāng / fāng / yīng / gāi / mǎ / shàng / qiān / hé / tóng / yè / cháng / mèng / duō / jiù / bù / hǎo / le

双方应该马上签合同，夜长梦多就不好了。

Both sides should sign the contract right away, or a delay could lead to complications.