I could do with a cup of tea.

我需要一杯茶。

《柯林斯英汉双解大词典》

In China, when a visitor comes, he is served with a cup of tea.

在中国，当有客人来访时，会给他端上一杯茶。

youdao

While Xiao Ming was doing his homework, his mother came with a cup of tea.

小明在做作业的时候，他妈妈端着一杯茶过来了。

youdao

The Media Operations people welcomed us with a cup of tea and biscuits.

BBC: Newsbeat - Afghanistan diary: Day One

Cheer up the old folks with a cup of tea, invent the cure for cancer, soak up that excessive production of beer, grow vegetables, whatever.

FORBES: Jobs Are a Cost Not a Benefit

Siwa is less about rushing around any major sights than it is about sitting back with a cup of tea or a sheesha and letting the halcyon days wash over you.

BBC: Siwa: An Egyptian oasis