This is the 4003rd most frequent Chinese word.
偶尔
Occasionally.
The word "偶尔" (occasional or sometimes) is used here to indicate an infrequent action, emphasizing that the speaker does not visit regularly.
我偶尔会去公园散步。
I occasionally take a walk in the park.
In this sentence, "偶尔" suggests the action happens sometimes and is not a usual behavior, describing a rare occurrence.
他偶尔会忘记带伞。
He occasionally forgets to bring an umbrella.
Here, "偶尔" modifies the frequency of rainy days or the action tied with them, emphasizing such days happen infrequently but do occur.