In contrast, to this free ranging dogs actually forage mostly by themselves solitarily.

相反，放养犬其实大多独处觅食。

A blush spread over the white cheeks of the old cashier. Music was his only vice, a secret vice which he indulged in solitarily, frequenting theatres, concerts and recitals.

老收银员白皙的脸颊上泛起红晕。音乐是他唯一的恶习，他独自沉迷于一种秘密的恶习，经常去剧院、音乐会和独奏会。