Dissertate
vi. 论述, 讲演, 写论文, 论说
✅ 同义词
🗣️ 情景例句
I did , but everything is OK,so I decided to come back.
回去了， 但一切安好。于是我决定回来。
I met one of the newscasters over at the television station.
我在电视公司遇到一位新闻播音员。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）