Helpfulness
n. 有益；有助
✅ 同义词
📖 牛津释义
helpfulness
n [U].
🗣️ 情景例句
Wrong number.
打错电话了。
I put too much detergent in the washer.
我在洗衣机里放了太多的洗衣粉。
People think we look the same, but I can see that we're different.
人们认为我们长得一模一样，但是我能看出我们的差别。