寒波
The cold wave is severe.
寒波が激しいです
The cold wave is suddenly severe.
急に寒波が激しいです
The cold wave is suddenly severe in the park.
公園で急に寒波が激しいです
The cold wave is suddenly severe in the park during the holiday.
休みに、公園で急に寒波が激しいです
The cold wave is suddenly and especially severe in the park during the holiday.
特に休みに、公園で急に寒波が激しいです