烟花在夜空中划出美丽的弧线。

The fireworks were ___arcing beautifully across the night sky.

篮球在空中划出一道完美的弧线飞向篮筐。

The basketball was ___arcing perfectly toward the hoop.

电工检查了电路，以避免电线之间产生电弧。

The electrician checked the circuit to prevent ___arcing between the wires.