Ercinite
交沸石
🗣️ 情景例句
and I can give you and Mrs. Stewart a month of classes free.
我让你和你太太免费上一个月的课。
Seeing is believing.
百闻不如一见。
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器，每个相隔1英尺，