hydra
n
1 (in Greek mythology) snake-like monster with many heads that grew again if they were cut off (希腊神话中的)蛇怪(长著许多头, 斩去後能重新长出).
2 (fig 比喻) thing that is hard to get rid of; recurring problem 难以除掉的事物; 一再出现的问题.
🗣️ 情景例句
Public transportation is quite convenient in this city.
在这个城市里,公共交通很方便。
Don't feel like it.
并不想。
Though, at first, Byrd and his men were able to take a great many photographs of the mountains that lay below, they soon ran into serious trouble.