Smr
abbr. standard mortality rate 标准死亡率; somnolent metabolic rate 睡眠状态代谢速率; senior maintenance rating 高级维护征收额; specialized mobile radio 专用移动无线（通信）
🗣️ 情景例句
That's the way it goes.
现实就是这样。
Patience is bitter, but its fruit is sweet.
忍耐是苦痛的，但它的果实是甜蜜的。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。