Nonholonomic system
[化] 非完整系
🧩 词语组成解析
🗣️ 情景例句
Gates close at 5pm sharp.
大门 5 点正关闭。
The problem is far from easy.
这问题绝非易事。
Suddenly they came to a waterfall which dropped into an underground lake at the bottom of the cave.
突然，他们来到一道瀑布前，那瀑布奔泻而下，注入洞底一处地下湖里。