这家健身房为开始健身之旅的人们提供专业的建议。

The gym offers ___expert advice for people starting their fitness journey.

你对本周末的天气有什么专业的预测？

What's your ___expert prediction for the weather this weekend?

我们不是专业的网球选手，所以可能会很快输掉比赛。

We're not ___expert tennis players, so we might lose the match quickly.