1. Sun exposure stimulates cancerous cells. After they accumulate over a period of time, you develop skin cancer.2. He's been saving a portion of his salary every month, little by little. Now he can buy a house.
 accumulate over a (long) period of time little by little白話的翻出即可.
1. 曬太陽會刺激癌細胞的成長, 日積月累後你就會得皮膚癌.2. 他日積月累的每月存下薪水一部份, 現在他可以買房子了.
The movie star is extremely high maintenance and only wears nme brand clothes.