continual指一再重复。翻译为“频繁的”,意思接近frequent
continual complaints (from Oxford)
频繁的抱怨
Thecontinualrise of China'sreal estate prices has a negative influence on China's overalleconomy and the people's livelihood.(from ChinaDaily)
中国房价的不断上涨对中国的宏观经济和民生都有消极影响。
另外此词也有continuous的含义。
continuous 指连续。不间断,翻译为“不断的”。
The rain has been continuous since this morning.
从今天早上到现在这雨就没停过。(from Oxford)
consistent 翻译为“始终如一的”

Our position is consistent and clear.(from China Daily)
我们的立场是
翻译为“一致的;不矛盾的”。与介词 with 连用。
The results are entirely consistentwith our earlier research.
constant翻译为“不断的;重复的”。此词与continual意思很相近。
This entrance is in constant use.
此入口经常使用。(from Oxford)
People in the affected area need food, clothing, constantmedical care, as well as emotional and psychologicalcounseling.(from China Daily)
受灾地区的人们需要食物,衣服,持续的医疗救助以及感情和心理的咨询。