Protargyl
元素原
🗣️ 情景例句
Are you involved in any extra-curricular activities on campus?
你在学校参加过任何课外活动吗？
Can we make the 5:30 train?
我们能赶上5:30的火车？
he answered me, but he spoke neither slowly nor clearly.
他回答了，但他讲得既不慢也不清楚。