英文；12+15=27,25—7=18,33*3=99,81除9=9,9+6—5=10,4*6+16

英文；12+15=27,25—7=18,33*3=99,81除9=9,9+6—5=10,4*6+16

twelve plus fifteen equals to twenty seven 12+15=27twenty five minus seven equals to eighteen 25—7=18thirty three times three equals to ninety nine 33*3=99eighty one divided nine equals to nine 81除9=9nine plus six minus five equals to ten 9+6—5=10four times six plus sixteen equals to fouty 4*6+16=40a smart girl 一个聪明女孩======以下答案可供参考======供参考答案1:12+15=27 twelve plus fifteen is twenty-seven, 25—7=18 twenty-five minus seven is eighteen, 33*3=99 thirty-three multiplied by three is ninety-nine, 81除9=9 eighty-one divided by nine is nine, 9+6—5=10 nine plus six and then minus five is ten, 4*6+16=40 four multiplied by six and then plus sixteen is forty, 一个聪明的女孩 a smart /clever/bright/cute girl供参考答案2:twelve plus fifteen equals to twenty seven twenty five minus seven equals to eighteen thirty three times three equals to ninety nine eighty one divided nine equals to nine nine plus six minus five equals to ten four times six plus sixteen equals to fouty a clever girl供参考答案3:Twelve and/plus fifteen is/is equal to twenty-seven 12+15=27Twenty-five minus seven is eighteen 25-7=18Tirty-three times three is ninty-nine 33*3=99eighty-one divided by nine is nine 81/9=9nine plus six,minus five equals ten 9+6-5=10four times six,plus sixteen equals forty. 4*6+16=40an intellectual/a smart girl参见《大学英语语法》第四版 徐广联

这个解释是对的