Ros
abbr. 只读存储器（Read-Only-Storage）；活性氧（Reactive oxygen species）
🗣️ 情景例句
Let's lake this one step at a time.
做这事我们要一步一步来。
Speak of angels and you will hear their wings.
说到曹操，曹操就到。
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。