Radiomateriology
X射線材料檢驗學
??? 情景例句
He's upset over the fact that he wasn't promoted this year.
他對今年沒有升遷感到惱怒。
I love that shirt.
我喜歡這件襯衫。
Now move the hand to and fro and around but not up and down.
然后把手前后左右以及旋轉擺動，但不要上下擺動。