Unformulated
a. 未用公式表示的,未系統地闡述的
??? 情景例句
She is in a meeting until night.
她開會要開到晚上。
Work today,for you know not how much you may be hindered tomrrow.
今朝有事今朝做，明朝可能阻礙多。
We are on the left.
我們在河的左側。