Be bad at bed是什么意思啊

Be bad at bed是什么意思啊 I'm really bad at initials.是什么意思?不是应该be bad in? 有没有be bad at Food may be very bad,bed may be very hard,but at least we live in my own life,no one else.翻译中 it is considered bad manners to be seen eating at all in parts of Polynesia是什么意思, I have to be in bed by ten o'clock.这句中 by ten o'clock是什么意思,为什么不是at,have to be in bed 是什么句型. be good at和be bad at的用法, 有be bad at 这个词组吗? be bad at有这个短语吗 be bad manners to laugh at others be good at的反义词是be weak/bad at还是 be weak/bad in be at school是什么意思 be skilled at是什么意思 英语单词Bad是什么意思啊? Don't read books in bed,or it_____(be)bad for your eyesight. Fangfang always goes to bed at nine.是什么意思 be bad for 和 be good for 是什么意思 英语翻译thank u-by didomy tea`s gone coldi`m wondering why i got out of bed at allthe morning rain clouds up my windowand i can`t see at alland even if i could it`d all be greybut ur pic on my wallit reminds methat it`s not so bad,it`s not so bad