🗣️ 情景例句
I don't know,
我不知道，
Money spent on the brain is never spent in vain.
智力投资，决非虚掷。
As the time and cost of making a chip drop to a few days and a few hundred dollars,
由于制造一块芯片的时间已缩短至几天，费用也只有几百美元，