Definition
To begin doing something with speed and efficiency.
迅速開始做某事。
We need to get cracking on preparing the presentation; time is running out.
我們需要趕緊開始準備簡報；時間不多了。
If you want to finish this project on time, you had better get cracking.
如果你想按時完成這個項目，你最好趕緊開始。
We need to get cracking on these chores before we can go to the park.
我們需要趕緊完成這些家務，然後才能去公園。