Ectosphere
[医] [中心]球外层
🗣️ 情景例句
Right now, we should clean up this room.
现在， 我们应当清理一下房间。
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Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。