He called out to the servant to come and help him, but she was busy about the supper and did not hear him.

他大喊叫仆人过来帮忙，但仆人正忙着准备晚饭，根本没听见他。

youdao

I tried to tell Dad, but he was busy setting up the beach umbrella. I tried to tell Mom, but she was busy slathering my baby sister with sunblock.

我想告诉爸爸，可是他正忙着安好沙滩伞。我想和妈妈说，可是妈妈也忙着给小妹妹涂防晒霜。

youdao

She phoned him several times but he was too busy to return her call.

她给他打了几次电话，但他太忙，不能给她回电话。

《牛津词典》

In the exchange, Palin aide Ivy Frye suggested one candidate "would be perfect as she knows the pageant world but also she knows how busy you and Todd are" and notes that her staff was "rallying the troops" to get other letters published.

CNN: Palin e-mails show routine work, running feuds