Perioidic system
[机] 周期系
🧩 词语组成解析
🗣️ 情景例句
If you want to have this job, you'll need to fully prepare for the interview.
如果你想得到这份工作，你得好好准备一下面试。
He is proud of his achievement.
他为自己取得的成就感到骄傲。
Are you a teacher?
你是教师吗？