Helpfulness
n. 有益；有助
✅ 同义词
📖 牛津释义
helpfulness
n [U].
🗣️ 情景例句
I love it!
我爱上它了！
Someone is using the phone.
有人在用电话。
I think we can draw up a tentative plan now.
我认为现在可以先草拟一具临时方案。