Univibrator
单稳(态)多谐振荡器
🗣️ 情景例句
I heard that you get vitamin D from sunshine, and that you soak it like a sponge.
我听说人们像海绵一样从阳光中摄入维生素D。
If you have no hand, you cannot make a fist.
巧妇难为无米之炊。
we all rushed to see it.
我们都赶紧跑去观看。