Radioreaction
放射反应
🗣️ 情景例句
It's seventy-five cents for adults and thirty cents for children under twelve.
大人75美分，12岁以下的小孩30分。
It is the first step that costs.
万事开头难。
Please ask her to call me back when she's back.
她回来时请让她给我回个电话。