Definition: A deep feeling or experience is very strong. Level: B2
我为自己的行为感到深深的懊悔。
I felt ___deep regret for my actions.
他们的儿子令他们深感失望。
Their son has been a ___deep disappointment to them.
遭受损失后，她陷入了深深的抑郁。
After the loss, she sank into a ___deep depression.
