constant的副词形式

constant的副词形式：constantly；
例句：
The direction of the wind is constantly changing、
风的方向在不断地变。
He constantly feels he has to prove himself to others、
他时常觉得自己必须向人一展身手。

Scientists are constantly developing new terminologies、

科学家不断发展新的`专门用语。

The sun is constantly evaporating the earth's moisture、

太阳使地球上的湿气不断蒸发。

I was constantly ill, with a baffling array of symptoms、

我不断地生病，还伴有一大堆莫名其妙的症状。