() [] paid in advance, before other payments are made提前支付的；预付的◆There will be an upfront fee of 4%.有一笔 4% 的费用须提前支付。⨁an upfront fee / payment预付费／款not trying to hide what you think or do坦诚的；不隐瞒的◆Investors are claiming that the company was not upfront about its financial problems.投资者认为这家公司隐瞒其财务问题。