Know the extent of
知道…的程度
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
the
[ðə]
art. 指已提到的人（物）;指说话人与听者已知的人（物）;用于独一无二的事物前;与形容词最高级和序数词连用;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
That's only part of it.
这只是一部分原因。
We can't write very well.
我们不能写那么多。
Sitting down on a dilapidated wooden fence near the field, we opened a couple of tins of sardines and had a picnic lunch.
我们在田边一堵东倒西歪的篱笆墙上坐下来，打开几听沙丁鱼罐头，吃了一顿野外午餐。