If you calculate a number or amount, you discover it from information that you already have, by using arithmetic, mathematics, or a special machine. 计算
verb [vt. 及物动词]计算,核算;预测,推测
From this you can calculate the total mass in the Galaxy. 据此,你可以计算出银河系的总质量。
calculate
“ -ate” ⌜ 表示使成为或具有某种特性的 - indicating to make or become ~ ⌟