To call it a night---to stop an activity for the rest of the night今晚就到此結束，收工

Feel free---go ahead and do sth; don't hesitate to do sth隨意(做某事)，請便[常常用于祈使句]：
Feel free to go where you like.
你想到哪兒去就可以到哪兒去。

to get out of the way---to move out of the way; to stop interfering with someone's plans or activities讓開，避開

to be in good hands---in good, competent care在可靠(或內行)的人手里；受到十分好的照料

to know one's stuff---to have an expertise in a field 在某方面很精通

to lend a hand---to help 幫忙

To lose one's touch---to no longer be able to sth well 失去…能力，不再能…

To be out of practice---no longer good at doing sth (因久不練習而)荒疏，生疏

to pick up---to acquire; to learn學到;獲得
He was picking up the skills quickly.
他正在很快地掌握技術。

Sweet tooth---an enjoyment of sugary foods喜吃甜食的人

to take over---to assume control接收,接管;接任;接辦
Johnson took over the chairmanship of the committee yesterday.
約翰遜昨天接任委員會主席一職。

Too many cooks spoil the broth---too many people involved in an activity can ruin it人浮于事, 兵精不必多, 人多誤事

to work one's tail off---to work very hard 努力工作