Helpfulness
n. 有益；有助
✅ 同义词
📖 牛津释义
helpfulness
n [U].
🗣️ 情景例句
Don't worry, Alexandra.
别担心，Alexandra。
So far I have been learning about China.
到止前我止，我一直都在研究中国的事情。
When you compare the prices,you must take everything into consideration.
当你在考虑对比价格时，首先必须把一切都要考虑进去。