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
Please excuse me. I'm very sorry.
请原谅我， 我真的很不好意思。
To ensure faster delivery, you are asked to forward the order by air freight.
为了确保迅速交货，我方要求此订货用空运。
The old lady was glad to be back at the block of flats where she lived.
老妇人回到了她居住的公寓楼，心里很高兴。