sister-in-law的复数如题

sister-in-law的复数如题 father- in -law,mother-in-law,brother-in-law,sister-in-law怎么变名词复数? step-son ,step-mother ,step-brother ,sister-in-law ,parent-in-law变为复数 brother-in-law 复数brother-in-law 的复数是brothers-in-law son-in-law 的复数是不是sons-in-law sister-in-law是什么意思? sister-in -law in law sister sister-in-law是什么意思 daughter-in-law的复数是什么啊? mother-in-law的复数形式是什么 with my sister-in-law这个sister-in-law是什么意思? Take my sister in law 嫂子的英语是什么?如题sister-in-law 的意思是夫或妻的姊妹, 我的意思是哥哥的老婆 请问“Hi eldest sister-in-law ”的中文意思是什么? 请问 “ Hi eldest sister-in-law ” 的中文意思是什么? sister and brother-in-law a happy p28 sister-in-law什么意思