Spacing collar
[化] 定距环
🧩 词语组成解析
spacing
['speisiŋ]
n. 间隔，间距;跨距;疏密;留间隔;
🗣️ 情景例句
I was deeply impressed by his speech.
他的演讲给我留下深刻的印象。
Slowly, stricter laws and regulations are being passed by Congress.
慢慢地，在国会表决通过了更严厉的法律法规。
it would be up and down, to and for and from side to side.
呈现出上上下下、来来回回、左左右右3种性质的运动。