Lm
n. 地上移动式无线电设备（Land Mobile）；登月舱（Lagrange multiplier）；光学显微镜
🗣️ 情景例句
Great! Let's do it!
好。 我们去。
When a dog is drowning,every one offers him drink.
待到狗溺水，众人给水喝。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。