用胳膊抱住的英文表达可以是 "hold in one's arms" 或者 "hug in one's arms"。
"Hold in one's arms" 的意思是用胳膊把某物或某人紧紧地抱住，通常是表示亲昵或保护的意思。例如：
She held the baby in her arms and sang a lullaby. (她抱着婴儿，唱着摇篮曲。)
He held her in his arms and comforted her. (他把她搂在怀里，安慰她。)
"Hug in one's arms" 的意思与 "hold in one's arms" 相似，但是更强调拥抱的动作，通常也表示亲昵或保护的意思。例如：
She hugged the stuffed animal in her arms and fell asleep. (她抱着毛绒玩具入睡。)
He hugged her in his arms and told her everything would be alright. (他把她搂在怀里，告诉她一切都会好起来。)
"Hold in one's arms" 和 "hug in one's arms" 都来自于英语中的动词 "hold" 和 "hug"，分别表示 "握住" 和 "拥抱" 的意思。