Unpenetrable
a. 不能穿入的, 难穿入的
🗣️ 情景例句
But please call first.
不过，请你先打电话。
Her life was devoted to caring for the sick and needy.
她一生致力于照顾病人和穷人。
I'm telling you for the last time!
我最后再告诉你一次！