Balco
巴尔可镍铁合金
🗣️ 情景例句
Let's give him our presents--now.
现在把我们的礼物送给爷爷吧。
That would be the responsibility of the buyer. We are prepared, however, to provide all the documentation costs.
那是属于买方的责任，我们仅承担提供所有文件的费用。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，