Clandestinely
出国 Abroadadv. 秘密地, 暗中地
✅ 同义词
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
In secondary school, children study mathmatic、phsicas and chemistry.
中学的小孩会读到数学、物理和化学。
It was a great help to me.
真是获益良多