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。