Radioindicator
[化] 放射性指示剂
🗣️ 情景例句
The right magic.
正确的魔法。
If one side fails to observe the contract,the other side is entitled to cancel it.
如果一方不履行合同协议，另一方则有权终止合同。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。