Radiability
射线透过性
🗣️ 情景例句
If there's anything you need, just knock on my door.
有什么需要帮忙的话，尽管敲门来找我。
Any questions?
有什么问题吗？
I have to raise some issues which may be embarrassing.
我必须提出一些比较尴尬的问题。