2012.09.11

oversee
=>to watch or organize a job or an activity to make certain that it is being done correctly
As marketing manager, her job is to oversee all the company's advertising.

complementary
=>useful or attractive together
complementary colours/flavours/skills
My family and my job both play an important part in my life, fulfilling separate but complementary needs.

complementary angle

requisite
=>necessary; needed for a particular purpose
He lacked the requisite skills for the job.
The requisite number of countries have now ratified the convention.

dependent
=>needing the support of something or someone in order to continue existing or operating
He has three dependent children.
It's very easy to become dependent on sleeping pills.

every so often
=>sometimes but not often
Every so often I treat myself to a meal in an expensive restaurant.

thrash
[T] to hit a person or animal hard many times as a punishment
His father used to thrash him when he was a boy.
He thrashed the horse with his whip.

retain
=> to keep or continue to have something
She has lost her battle to retain control of the company.
He managed to retain his dignity throughout the performance.
She succeeded in retaining her lead in the second half of the race.
I have a good memory and am able to retain (= remember) facts easily.
=> If a substance retains something, such as heat or water, it continues to hold or contain it
The sea retains the sun's warmth longer than the land.
See also retention