Neusilber
铜镍锌合金
🗣️ 情景例句
The only-child generation brings about many new social problems.
独生子女一代带来了许多新的社会问题。
What lives in there?
那里面生存着什么呀？
Look! There's Meimei! She's very strong. She's lifting that ladder.
瞧！梅梅在那儿。她很强壮。她举着把梯子。