🧩 词语组成解析
that's
[[ðæts]]
(=that is)说得更精确些, 简而言之
how
[haʊ]
adv. 怎样;健康状况如何;到何种地步;以任何方式;
n. 方法;方式;
roll
[rəul]
vt. 辗;使（眼球等）左右转动;（使）原地转圈;滚动;
vi. 左右摇晃;翻滚;开始移动，启动;
n. 名册;滚翻;
🗣️ 情景例句
We aren't going, for the simple reason that we can't afford it.
我们不去，原因很简单，我们负担不起。
After black clouds, clear weather.
否极泰来。
So it became known as the gold rush.
成为广大为人知的“淘金热”。