Hanoi Mayor Nguyen Duc Chung told city residents to be on their best behavior, noting the large presence of foreign reporters.

河内市市长阮德涌（Nguyen Duc Chung）呼吁市民要表现得体，并特别提到来访的大批外国记者。

When they're being watched, politicians have less power, police do right by the public, even massive corporations are on their best behavior.

当他们被监视时， 政治家的权力就会减弱， 警察会为公众做正确的事，即使是大公司也会表现得最好。

As children, pleasers do everything they can to be good and to be on their best behavior, so as to not provoke a negative response from their parent.

作为孩子，取悦者会尽其所能表现良好，以避免引起父母的负面反应。

No, and he's not my boyfriend, but I do like him and would like to get laid by him, so everyone be on their best behavior.

不，而且他也不是我男朋友，但我真的喜欢他也想被他睡，所以大家都好好表现吧。