Ecr
abbr. 紧急战斗的准备状态（Emergency Readiness）
🗣️ 情景例句
Listen, Richard,doing aerobics for an hour is a lot different than lifting weights.
听着， Richard，一小时的有氧运动可与举重大不相同。
Which one do you prefer?
你比较喜欢哪一个？
What's the matter with him?
他怎么啦？