(informal)monitor the activities or development of; keep under observation
(非正式)監(jiān)控…的活動（或進展）；密切注意
(informal, chiefly N.Amer.)pay for something
(非正式，主北美)付賬；承擔費用
my company will pick up the tab for all moving expenses.
我公司將承擔搬遷的所有費用。
To observe carefully
密切注意
Let's keep tabs on expenditures.
讓們密切注意開支情況