1-70的复数,指的是1-70的双数,分别有2.4.6.8.10.12.14.16.18.20.22.24.26.28.30.32.34.36.38.40.42.44.46.48.50.52.54.56.5860.62.64.66.68.70.一共这么多,够不够你用呢