Raynaud's sign
[医] 雷诺氏征, 肢端缺氧
🧩 词语组成解析
🗣️ 情景例句
Is he OK?
他还好吗？
True blue will never stain.
真金不怕火。
He put a glass dish with sugar water and honey to the west of the hive. A marked bee fed itself from the dish and returned to the hive.
他在蜂箱的西面放一个装有糖水和蜜蜂的玻璃碟子。