一蹴而就的英文：
[Literal Meaning]
one/step/aux./accomplish
to accomplish something in one move

[解释]
蹴：踏；就：成功。踏一步就成功。比喻事情很容易，一下子就成功。

[Explanation]
to be easy to get successful

[例子]
这个任务挺难的，不能一蹴而就，在很短的时间做完。

[Example]
The task is rather difficult. We cannot accomplish in an action and expect it to be completed in a short time.

An oak is not felled at one stroke
万事不能一蹴而就