Silfbergite
铁镁锰闪石
🗣️ 情景例句
A little knowledge is dangerous.
一知半解最危险。
He emerged as leader at the age of thirty.
他在30岁时出人头地成为领袖。
Radio and television have made it possible for advertisers to capture the attention of millions of people in this way.
电台、电视使做广告的人可以用这种手段吸引成百万人的注意力。