Helpfulness
n. 有益；有助
✅ 同义词
📖 牛津释义
helpfulness
n [U].
🗣️ 情景例句
Winter in Beijing is too cold.
北京的冬天很冷。
I'll make up the money to the amount you need.
我会补足这笔款项。
I've never met him but I've talked to him on the net.
我没见过他，但我和他在网上聊过天。