Blocknut
保险螺帽, 防松螺帽
🗣️ 情景例句
He made a pretty fortune by selling all his land.
他卖了所有的土地发了大财。
Wise men learn by other men's mistakes;fools by their own.
聪明人从旁人的错误中吸取教训，愚笨人则从自身的错误中吸取教训。
That's fine.
可以。