Undergird
vt. 从底层加固, 支持, 加强
🗣️ 情景例句
Let's have a talk about it in advance.
我们事先商量一下。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
In many ways, this is unfortunate for the poor actors who are required to go on repeating the same lines night after night.
这样一来，可怜的演员们可倒霉了。因为他们需要一夜连着一夜地重复同样的台词。