Watchdog
[ ['wɔtʃdɔg] ]
辅助 Assistant
n. 看门狗, 监察人\\n[化] 监控设备; 监视器
✅ 同义词
🔴 反义词
🗣️ 情景例句
Yeah. What's the bet?
好啊， 赌什么？
Know something like the palm of one's hand.
熟知其事，了如指掌。
Have you got a penfriend?
你有笔友吗？