Tectrix
n. [鸟]覆羽(指蔽覆羽翮基部的羽毛)
🗣️ 情景例句
My new shoes hurt my feet ...
我的新鞋弄痛了我的脚……
He is wise that is honest.
诚实者明智。
it takes much less energy to accelerate to that 1.5 miles per second than it does on Earth.
在月球上加速到每秒1。5英里比在地球上所用能源要少得多。