“张开双臂”常见的英文表达有 "spread one's arms wide" 或 "open one's arms"。
"spread one's arms wide"：强调手臂向两侧大幅度展开的动作，形象地传达出张开双臂的姿态，比如 “He spread his arms wide to welcome her.”（他张开双臂欢迎她） 。
"open one's arms"： 表述更简洁直接，侧重于表达张开双臂这个行为动作，例如 “She opened her arms to give him a hug.”（她张开双臂给了他一个拥抱） 。