Moreover, if you look at the earlier T4 style definition you'll see that it merely defines normal — that is, default — font style and weight.

此外，如果看一看前面的T4样式定义，就会发现基本上定义了常规的——即默认的——字体样式和粗细。

youdao

A simple way to visually distinguish the two that I sometimes do, is to use a bold font weight on the Primary action and a normal font weight on the Secondary.

一个简单的方法从视觉上区分两点：我经常去做，则使用粗体(bold font weight)，放在首要动作上，而一个正常的字体放在次要动作上。

youdao