Fluorod
荧光剂量棒
🗣️ 情景例句
When you're out in the fresh air like this, it makes you hungry.
当你来外面呼吸这么新鲜的空气时， 就很容易饿。
Ann prefers cold weather to hot weather.
安喜欢寒冷天气，不太喜欢炎热天气。
She heard the front door open and heavy footsteps in the hall.
她听见前门被打开，走廊里响起重重的脚步声。