同根派生 英汉例句If your income is$2,386.46, it will be rounded down to$2,386 for tax purposes.如果你的收入是2,386。46美元，为收税的方便，就将尾数舍去成2,386美元整数。A charge of 1.90 will be rounded up to 2, and one of 3.10 rounded down to 3.把 1.