Helpfulness
n. 有益；有助
✅ 同义词
📖 牛津释义
helpfulness
n [U].
🗣️ 情景例句
I was counting on more.
我期待着会比这要要。
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
Is it too small?
这件太小了吧？