问题是,我们是否乐于假设我们的孙子孙女可能永远无法在大象的图片书之外看到大象?
解释:饿了再吃,粗茶淡饭味道也像吃肉一样可口。安稳走路就不会感觉到劳累,权当坐车。
The only limit to our realization of tomorrow is our doubts of today.