Balco
巴尔可镍铁合金
🗣️ 情景例句
It's good that you went back.
你回去是对的。
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。