stick to correctly or closely; "The pianist kept time with the metronome"; "keep count"; "I cannot keep track of all my employees" 同义词：observe, keep,
support against an opponent; "The appellate court upheld the verdict" 同义词：uphold,
state categorically 同义词：assert, asseverate,
state or assert; "He maintained his innocence" 同义词：defend,
maintain by writing regular records; "keep a diary"; "maintain a record"; "keep notes" 同义词：keep,
supply with necessities and support; "She alone sustained her family"; "The money will sustain our good cause"; "There''s little to earn and many to keep" 同义词：sustain, keep,
maintain for use and service; "I keep a car in the countryside"; "She keeps an apartment in Paris for her shopping trips" 同义词：keep,
have and exercise; "wield power and authority" 同义词：wield, exert,
keep in safety and protect from harm, decay, loss, or destruction; "We preserve these archeological findings"; "The old lady could not keep up the building"; "children must be taught to conserve our national heritage"; "The museum curator conserved the ancient manuscripts" 同义词：conserve, preserve, keep up,
keep in a certain state, position, or activity; e.g., "keep clean"; "hold in place"; "She always held herself as a lady"; "The students keep me on my toes" 同义词：keep, hold,
例句与用法
1.
The visiting team maintained a powerful offensive ... 客队攻势凌厉。
2.
This school is maintained by a charity . 该校由一慈善机构资助。
3.
Each city and province maintains its own camp . 各省市都有自己的劳改营地。
4.
These cultures can be maintained indefinitely . 这些培养物能无限期地保存。
5.
Policemen maintain order in the streets . 警察在街上维持秩序。
6.
She tried to maintain a businesslike look . 她想要保持一种有条不紊的样子。
7.
The depth of the river is maintained by dredging . 通过疏浚保持河道的深度。
8.
Whate'er betide , maintain your courage . 无论有什么事发生，都不要惊慌失措。
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