grass怎么读

tile [tail] n. 瓦，瓷砖tilt [tilt] v. （使）倾斜n. 倾斜，斜坡timid [?timid] a. 胆怯的，怯懦...

put和under读音是否相同？读音不相同: [p?t] ，[?nd?]Did you put sugar in my coffee?你在...