splash out
US
UK splash out vi phrasal: figurative, slang (spend extravagant sum of money)
SC 挥霍, 大笔花钱
We splashed out last night and went to a fancy restaurant.
我们昨晚花了大钱，去了一家高档餐厅。
splash out on [sth] vi phrasal + prep: figurative, slang (spend extravagant sum of money on)
SC 在…上花一大笔钱
We've just splashed out on a luxury holiday.
我们刚刚花了一大笔钱，享受了一个奢侈的假日。