Radiothor
放射性指示剂
🗣️ 情景例句
Thanks, Mrs. Martinelli.
谢谢 ，Martinelli太太。
You can't make bricks without straw.
没有稻草，制砖难搞。
After crossing the Equator, the captain called in at a port to have a new rudder fitted,
跨越赤道后，船长将船停靠在一个港口，在那儿换了一只舵。