Concen
abbr. control center 控制中心
🗣️ 情景例句
Are all the classes within walking distance?
所有的教室都在步行范围之内吗？
Can you keep an eye on the baby while I go shopping?
你能否在我上街买东西的时照看一下孩子？
Would you be kind enough to sign our visitors book?
请在来宾簿上签名好吗？