-th
（表示动作或过程）
📖 牛津释义
-th
suff 後缀
1 (with a few vs and adjs forming ns 与少数动词及形容词结合构成名词): growth * width.
2 (with simple numbers except one, two and three forming ordinal numbers 与除one、 two和three以外的基数词构成序数词)
sixth * fifteenth * hundredth.
🧩 词语组成解析
[医] 钍(90号元素)
🗣️ 情景例句
Please pass me a knife.
请把刀递给我。
I will take a plane.
我将去搭飞机。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。