◆South Dakota 南达科他州 （美国）
◆◆◆perpetual adj. 永久的
lasting for a long time
perpetual : 不休止的，一直持续下去的，不易受阻的
Eg: They are as poor as church mouse, they have to struggle against perpetual poverty.
Eg: It is raining constantly. 雨不停地下着。
Eg: They have continuous discussion.
They have continuous attempt.
They made great success in their continuous attempt.
Eg: It rains continually.最近频繁地在下雨。
It is raining continuously / constantly.
Eg: The pair of trousers is lasting.
Generally speaking, jeans are lasting.
Eg: You can appreciate endless unbroken clouds.
Studying English is our perpetual task.
eternal adj. 永恒的，永久的，不朽的
Eg: His name is immortal because the longest suspension bridge was named for him.
Eg: In a big city, sometimes we can not get permanent job.
constant; continuous; everlasting; lasting; endless; eternal; permanent; perpetual
◆quintuplet n. 五胞胎之一
◆obscurity n. 默默无闻
Eg: He is in obscurity.
obscure adj. 不起眼的
Eg: The bus stopped at a obscure bus stop.