“下侧”的拼音为：xià cè...

她胳膊下侧有一层肥肉一颤一颤的。A roll of fat jiggled on the underside of her arm.他射门击中了横梁的下侧.His shot hit the under - side of the bar , ie the one across the goal - posts.他有个伤疤正好在他左眼的下侧.He had a bruise just below his left eye....

“下侧”的英语可以翻译为：downside，underside ...