Safety rail
护轨
🧩 词语组成解析
rail
[rel]
n. 围栏;轨道，钢轨;扶手;[动]秧鸡;
vi. 责备;抱怨;责骂;
vt. 将…围起来;铺铁轨;坐火车旅行;用围栏围;
🗣️ 情景例句
Certainly.
当然。
Come back!
回来！
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。