穿不過去
兩個意思都是同一個畫面，差別只在擋住的是實體的東西，還是別人的話和壓力。
adjective · C1
Not letting water, air, heat or anything else pass through. It is used about materials, rocks and surfaces, and is usually followed by to.
不透水的
核心畫面
A surface with no way through it. Something arrives — rain, heat, a hard word — and it stays on the outside, leaving no mark and getting no further. Whatever is behind that surface carries on exactly as before, which is why the word always names what is being kept out: impervious to water, impervious to criticism.
可以想成一個表面，上面完全沒有通道。不管來的是雨水、熱氣，還是一句重話，它都停在外面，進不去，也留不下痕跡。後面的東…更多收起
可以想成一個表面，上面完全沒有通道。不管來的是雨水、熱氣，還是一句重話，它都停在外面，進不去，也留不下痕跡。後面的東西照樣不受影響。正因為重點在「擋住什麼」，這個字後面幾乎一定接 to，把擋掉的東西講出來。From the word’s history
From Latin impervius, that cannot be passed through: in- (not) + pervius (letting things through).
拉丁文 impervius 的意思就是「穿不過去的」：in- 是不，pervius 是可以讓東西通過的。字面上就是「沒有路可以穿過」，這正是今天兩個用法共用的畫面。
Wiktionary etymology_text supplied in packet (kaikki:3f6f69a190036ae4:879945757)
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