They just sat there wittering about what lectures they had tomorrow.他们就坐在那儿没完没了地聊明天要听哪些讲座。He attended his lectures and took copious notes.他去听他的课，做了大量的笔记。Attendance at these lectures is not compulsory.这些课不是硬性规定要听的。...
Embroidery calls for great care . There must not be even a single sloppy stitch.刺绣要求很高, 一针也不能马虎.It is a headache to decipher his sloppy penmanship.辨认他的潦草的字迹叫人头痛.Mother constantly picked at him for being sloppy.母亲不断地批评他衣着...