Calsibar
钙硅钡合金(脱氧剂)
🗣️ 情景例句
Ten o'clock.
十点钟。
Let the hands get busy, not the mouth.
手要勤劳，嘴莫多说。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。