🧩 词语组成解析
🗣️ 情景例句
We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏，
He succeeded in passing the examination.
他成功地通过了考试。
Jack is trying to cut down on smoking.
竭克正竭力戒烟。