连忙的英文：
promptly
at once

参考例句：

A big flemish servant-maid placed his knife and fork in all haste
一个佛兰德胖侍女连忙摆上餐具。

A bitter sleet came rattling against us here on the east wind, and Joe took me on his back.
一阵砭人肌骨的雨夹雪驾着东风，沙沙地向我们迎面扑来，乔连忙把我背在背上。

"She would have gone on in this vein, but Baochai told her sharply to hold her tongue."
"宝钗不等说完,连忙断喝."

The bishop gave his hand quickly, made his little studied bow
主教连忙伸出手去，很矜持的欠了欠身。

When the water pipe burst, she had the intelligence to turn off the water at the main
水管裂开时,她很有头脑,连忙把总水门关上了

"Roused from sleep by the announcement of Keqing's death, he sprang suddenly from his bed. "
"如今从梦中听见说秦氏死了,连忙翻身爬起来"

I dressed speedily, in a suit of blue laid ready for me
我连忙穿上一套为我准备好的蓝衣服。

When he heard the bomb whistling down, he hurled himself down on the floor with his hands over his head
他听到炸弹呼啸而来时，连忙用手护着头部扒在地上。

"I fully appreciate his delicacy," said Andrea, cramming the notes hastily into his pocket
“我很理解他这种体贴的心思。”安德烈说，连忙把钞票塞进他的口袋。

And she hurried again into the road, and again constrained herself to walk regularly and composedly forward
她连忙又走上公路，强制自己不慌不忙，安步当车地向前行进。

promptly是什么意思：
adv. 迅速地，立即地；及时地，准时地

Deliberate slowly; execute promptly
决策要慢,行动要快

The spy was promptly dispatched.
间谍被按时绳之以法。

That plan was promptly executed.
该计划立即得到实施。

He deals with emergencies promptly.
他迅速处理突发事件。

To complete,transact,or dispose of promptly.
迅速处理迅速地完成、处理或分配

once是什么意思：
adv. 一次，一回；一度；曾经
conj. 一旦；一…就…
n. 一次；一回

Once is no custom
一次不成例

Do it for this once.
就干这一次吧。

Gordon is at once modest and clever.(at once …and…既..又)
戈登既聪明又谦逊

This is the leap once of process of cognition.
这是认识过程的一次飞跃。

Slavery was once socially sanctioned.
奴隶制曾经为社会所认可。