Phone system
单音体系
🧩 词语组成解析
🗣️ 情景例句
Dogs make great pets, but don't leave them alone with small children.
狗是最好的宠物，但不要让狗和小孩子单独在一起。
He's on the phone.
他在打电话。
He sends me interesting postcards from the ports where the ship stops.
他还从船停泊的海港给我寄来了明信片。