是可數名詞，例如：
1、This would be a good place for a picnic.這可是個野餐的好地方。
2、It was a perfect day for a picnic.那是野餐最理想的天氣。
3、Bringing up a family when you're unemployed is no picnic.失了業還要養家可不是容易的事。
4、This would be a good place for a picnic.這可是個野餐的好地方。
picnic是可數名詞。picnic N-COUNT 野餐戶外用餐 When people have a picnic， they eat a meal out of doors， usually in a field or a forest， or at the beach.
