Undulators
(undulator 的复数) [电] 波纹印码机
🗣️ 情景例句
Now what?
又怎么了？
The doctor said I looked worried and nervous.
医生说我看起来太忧郁和紧张了。
The body's tissues are self-repairing and self-restoring to a degree, and function best when more or less continuously active.
人体组织在一定程度上有自我修补和自我恢复的能力，有张有弛地连续活动时，其功能最佳。