Setbkcolor
设置后景颜色
🗣️ 情景例句
She can't sit around and do nothing.
她总不能闲坐着无所事事呀。
How many passengers were on the train?
在火车上有多少旅客？
Old tunes are sweetest and old friends are surest.
老调最甜美，老友最可靠。