你把高等数学和初等数学弄混了。美国只是一个思维方式不同，数数可能慢点，过分依赖计算器。
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy
