not know chalk from cheese

英语新词汇与常用词汇的翻译... ... not in the same street with 相比 not know chalk from cheese 不辨黑白 not less than 至少 ...

英语教学法(二)(转载) ... 小题大做： a storm in a tea-cup 不知好歹： not know chalk from cheese 光阴似箭： Time flies! ...