Once-through
直流，直通
🧩 词语组成解析
through
[θru]
prep. 通过，穿过;经由;透过;凭借;
adv. 从头到尾;彻底;自始至终;
adj. （电话）接通;通话完毕;有洞的;直达的;
🗣️ 情景例句
Get busy with your famous apple pie.
快做你拿手的苹果派吧。
His wife died a year ago. Now he lives alone.
他妻子去年去世了。现在他一个人住。
I'm going to put it here,in front of the window.
我准备把它入在这儿，放在窗前。