Radiother
[化] 放射指示剂
🗣️ 情景例句
He is fun to be with.
与他相处很有趣。
He drinks a lot of vegetable juice.
他每天都喝很多蔬菜汁。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。