Circular blast-main
[化] 環式鼓風管
?? 詞語組成解析
blast
[bl?st]
n. 爆炸;一陣（疾風等）;（吹奏樂器、哨子、汽車喇叭等突然發出的）響聲;突如其來的強勁氣流;
vt. 擊毀，摧毀;尖響;裁判高聲吹哨;枯萎：使枯萎;
vi. 爆炸;吼叫;枯萎：枯萎;攻擊：嚴厲批評或猛烈攻擊;
main
[me?n]
adj. 主要的，最重要的;全力的;
n. 最主要的部分，重點;主要管道;體力;[航海]公海;
??? 情景例句
If I've ever been sure of anything, I'm sure of this; your team is going to lose the same game on Saturday.
這一次我十分肯定：你們隊星期六的比賽會輸。
There are only two minutes left.
只剩兩分鐘了。
I crossed the street to avoid meeting him, but he saw me and came running towards me.
我穿過馬路以便避開他，但他看到我并朝我跑過來。