sieve /siv/ I. n.［c］ 1.（细）筛；格筛；滤网，漏勺: pass flour through a sieve用筛子筛面粉； a head/memory /mind like a sieve健忘的脑子：If you have a memory/mind like a sieve, you forget things very easily. 说脑子/记性像筛子就是说非常健忘。We use a sieve to train soup.我们用漏勺滤汤。‖II. vt. 筛；滤：sieve the earth in order to sieve out the stones from the soil把石头从土里筛出来