Epitrochoid
[机] 外转轴线
🗣️ 情景例句
Who is it?
谁呀
OK.
好的。
that twenty or thirty pages of ideas and information would be capable of turning the present-day world upside down, or even destroying it.
二三十页材料中的思想和情报会使当今的世界天翻地覆，甚至毁灭这个世界。