A watch dog
看家狗,看门狗
🧩 词语组成解析
watch
[wɔtʃ]
vt. 注视，注意;看守，监视;守候（机会等）;密切注意;
n. 表;值夜，值班;看守，监视;值班人员;
vi. 观看;注视;守候;看守;
dog
[dɔɡ]
n. 狗;蹩脚货;丑女人;卑鄙小人;
v. 困扰;跟踪;
🗣️ 情景例句
He is a big fan of the NBA games.
他是NBA的铁杆球迷。
Second thoughts are best.
三思而行，再思可也。
it takes much less energy to accelerate to that 1.5 miles per second than it does on Earth.
在月球上加速到每秒1。5英里比在地球上所用能源要少得多。