adj.非正式的，轻松的，无拘束的
v.解开…的纽扣
unbutton的过去分词和过去式

原形：unbutton第三人称单数：unbuttons过去式：unbuttoned过去分词：unbuttoned现在分词：unbuttoning

He unbuttoned his shirt to cool off in the warm summer breeze.
他解开衬衫扣子，让温暖的夏日微风吹过。
She carefully unbuttoned the top button of her dress before leaving the party.
她离开派对前，仔细地解开了上衣的扣子。
After a long day, he unbuttoned his suit jacket and sank into the couch.
经过漫长的一天，他解开西装外套扣子，瘫坐在沙发上。
The child was too excited to button their new coat properly, so their mother helped them.
孩子太兴奋，无法正确扣上新外套的扣子，于是妈妈帮忙。
Unbuttoning the suitcase, she began to unpack for her vacation.
打开手提箱，她开始为度假做准备。
He unbuttoned the last button on his shirt as he reached the end of the meeting.
会议结束时，他解开了衬衫的最后一颗扣子。
She unbuttoned her jeans and changed into her yoga pants for the workout.
她解开牛仔裤扣，换上了瑜伽裤准备锻炼。
The wind blew open the unbuttoned door, revealing the cozy room inside.
风吹开了未关的门，显露出屋内的舒适景象。
He taught his son how to unbutton his own shirt, fostering independence at an early age.
他教儿子自己解开衬衫扣子，培养他的独立性。
She unbuttoned the flowered blouse, revealing a simple white t-shirt underneath.
她解开花衬衫的扣子，露出里面简单的白色T恤。