He kept us at it all day.
他讓我們不停地幹了一天。
For reasons of security the door is always kept locked.
爲了保證安全，門總是鎖着的.。
Dogs must be kept on a lead in the park.
狗在公園裏必須繫着牽狗帶。
The bills kept coming in, one after another.
賬單紛至沓來。
Next year's collection is still being kept under wraps.
明年的時裝系列仍在保密之中。
