这对爱情鸟在笼子里互相梳理羽毛，看起来非常亲密。

The pair of ___lovebirds are preening each other's feathers in the cage, looking very affectionate.

公园里那对情侣一直在亲吻，真是对如胶似漆的爱情鸟。

The couple in the park kept kissing each other - they're such adorable ___lovebirds.