Use a black pen on white paper to ensure good reproduction.

　　用白紙黑筆，以確保復印清晰。

　　She's been in a really black mood all day.

　　她一整天都心情很壞。

　　One cat is black and white, the other solid black.

　　一只貓是黑白花色的，另一只貓是純黑色的。

　　The company viewed the venture as a financial black hole.

　　公司認為該項投資是財政上的一個(gè)大黑洞。

　　The hill appeared as a black mass in the distance.

　　遠遠地看去，那座山是黑魆魆一片。