Constantan
n. 康铜(铜镍合金)\\n[医] 康铜(镍铜合金)
🗣️ 情景例句
Hi, Michelle. It's Daddy.
嗨 Michelle 是爸爸。
Look! Lightening has struck the tree and it's on fire.
瞧！闪电划下来，引燃了树木。
Yes, they are.
对，这些是英语书。