Filling opening
[化] 填充孔; 注入孔
🧩 词语组成解析
filling
['filiŋ]
n. 装满，填满;填充物;（糕点内的）馅;（织品的）纬纱;
v. 填满(fill的ing形式);
opening
['opənɪŋ]
n. 开幕，开始;空缺的职位;[商]开盘，交易开始时间;（职位的）空缺;
adj. 首次的，开始的;
v. （打）开( open的现在分词);开始;睁开;启动;
open 开；开始+ ing 名词后缀 → 开始的\r\n
🗣️ 情景例句
I can't drive, I've never driven in my life.
我不会开车，我这辈子都没开过车。
The husband has built a doghouse for his dog.
丈夫为爱犬建造了狗屋。
The American president who fought for the freedom of slaves in the USA.
为美国奴隶的自由而战的美国总统。