like: duy trì → →
Ich bin hier, um meine Kontakte zu pflegen. ☊ 
Tôi có mặt ở đây để duy trì các mối quan hệ. ☊ (Lektion 122, Nr. 2371) They have maintained a close association with a college in the US. ☊ association ☊
a sustained attack on the Arsenal goal ☊ attack ☊
This newspaper maintains a good balance in its presentation of different opinions. ☊ balance ☊
We need to work harder to remain competitive with other companies. ☊ competitive ☊
The company has maintained trade contacts with India. ☊ contact ☊
the failure of the United Nations to maintain food supplies ☊ failure ☊
focus on sth: We shall maintain our focus on the needs of the customer. ☊ focus ☊
to maintain friendly relations with all countries ☊ friendly ☊
policies aimed at sustaining economic growth ☊ growth ☊
to sustain injuries/an injury ☊ injury ☊
We're having difficulty keeping up our mortgage payments. ☊ keep sth up ☊
The government struggled to maintain law and order. ☊ law and order ☊
to maintain law and order/standards/a balance ☊ maintain ☊
She maintained a dignified silence. ☊ maintain ☊
to maintain prices (= prevent them falling or rising) ☊ maintain ☊
maintain (that)...: The men maintained (that) they were out of the country when the crime was committed. ☊ maintain ☊
maintain sth: She has always maintained her innocence. ☊ maintain ☊
Her income was barely enough to maintain one child, let alone three. ☊ maintain ☊
The army has been sent in to maintain order in the capital. ☊ order ☊
He maintained order by sheer force of personality. ☊ personality ☊
to retain your independence ☊ retain ☊
It was difficult to maintain a secure foothold on the ice. ☊ secure ☊
We aim to maintain high standards of customer care. ☊ standard ☊
This one power station keeps half the country supplied with electricity. ☊ supply ☊