If you experience something such as a feeling, attitude, or illness mildly, you are not strongly or severely affected by it.
Josephine must have had the disease very mildly as she showed no symptoms.
约瑟芬那时一定病得很轻,因为她没表现出什么症状。
If you behave mildly, you behave gently and do not get angry.
'I'm not meddling,' Ken said mildly, 'I'm just curious.'
“我不是在管闲事,”肯温和地说,“我只是好奇。”
put it mildly
You use to put it mildly to indicate that you are describing something in language that is much less strong, direct, or critical than what you really think.
But not all the money, to put it mildly, has been used wisely.
但是说得委婉些,并不是所有的钱都用得很明智。