一边先说了小于29度，但一定跟老美猜测/先前惯例不同，并且有意图不单纯嫌疑；另外一
边借力使力.
这样算不算各怀鬼胎呢？
https://web.archive.org/web/20220107033545/http://ep.nao.cas.cn/epmission/epoper
ation/201907/t20190724_505560.html
https://blog.ucsusa.org/david-wright/how-high-did-chinas-may-2013-launch-go/