春之泉在哪儿?
Where is the Spring Fountain ?
春之泉在哪儿?
"Where is the spring ah, where is the spring, spring is in the children's eyes..." Sing the song familiar songs, I can't help themselves enjoyed the spring.
“春天在哪里呀,春天在哪里,春天在那小朋友的眼睛里……”唱着这首熟悉的歌儿,我不由自居的欣赏起了春天。
It also tells you that if you compress the spring, compress it means x is now-- x is measured from this position, where the spring is neither compressed nor expanded.
它还能告诉你,如果压缩弹簧,压缩就意味着现在 x...,x 是从这个位置开始算的,在这个位置弹簧既没有压缩也没有伸长
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