Gainfulness
n. 唯利是图（原形是gainful）
✅ 同义词
🗣️ 情景例句
What display resolution will you be working with?
你要用什么样的显示率工作？
He should meditate on the problem.
他必须就那个问题好好地想一想。
They spent a full and very enjoyable morning together, and Fred discovered that he had a gift for making a visit interesting and lively.
他们一起度过了一个充实而又非常愉快的早上，弗雷德发现自己具有导游的才能，能使参观活动变得趣味盎然。