Dch
[医][=delayed cutaneous hypersensitivity]迟发型皮肤过敏（反应）
🗣️ 情景例句
If you know a man's last name, address him as 'Mr.'.
如果你知道一个男性的姓， 应该用 'Mr。' 来称呼他。
Kinsman helps kinsman,but woe to him that hath nothing.
亲人帮亲人，无亲来帮愁煞人。
Well, I couldn't sleep last night.
啊，我昨晚上没睡好觉。