Membranogen
膜素
🗣️ 情景例句
because, Danny,
因为Danny，
He feels awkward.
他感到困惑。
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。