at once and的意思|示意
既…又…
at once and的用法详解
At once and 这组词是后置定语，表示“立即或同时”。它常用于句中作连词，表示两件事情发生或应当发生的顺序。它可以用来修饰动词、动词短语或句子，也可以用来表达两件事情发生在同一时间段内。
例如：
He opened the door and entered at once. 他打开门进来，立刻进去了。
He went to the store, bought the food and came home at once. 他去了商店，买了食物，然后马上回家。
At once and can also be used to express a sequence of two things happening at the same time.
例如：
He turned on the light and the room was illuminated at once and. 他打开灯，房间立刻被照亮了。
We need to unpack the boxes and organize them at once and. 我们需要把箱子打开，然后立即组织好。
总的来说，at once and的主要意思是“马上和同时”，它可以用来表示句子中两个或多个动作发生的顺序，也可以用来表达两件事发生在同一瞬间。
at once and相关短语
1、 at once and without hesitation 立刻而不犹豫地
2、 And Begin At Once 并且立即
3、 At once old and young 古老年轻
4、 at once performance and spectator 听听听听听听听听听听听
5、 shine and die at once 留下的只有回忆
at once and相关例句
Go at once and you will see her.
马上去,那么你就会见到她了.
《现代英汉综合大词典》
He took off at once and headed back to the motel.
他出人意料地立刻就离开了，然后回到了那家汽车旅馆。
Now several brothers started to speak at once, and Brother Jack knocked for order.
这时几个兄弟不约而同地开了腔, 杰克兄弟不得不敲木槌要大家遵守纪律.
辞典例句
Pisces can handle many different tasks at once and be successful in all of them.
双鱼座可以同时处理许多不同的任务，而且都能成功。
Tom turned upon the back track at once, and hurried his steps.
汤姆立即按原路返回, 步伐很快.
英汉文学 - 汤姆历险
He took off at once and headed back to the motel.
他立刻离开，回到汽车旅馆。
柯林斯例句
He must leave Harmony Yard at once and break with them completely.
他得马上离开人和厂,跟他们一刀两断.
汉英文学 - 骆驼祥子
Hearing the words, Zhang Yu bowed at once and thanked Song Ming sincerely.
张宇听了这话，立马鞠躬，真诚地向宋明道谢。