to always be ready to help or obey someone
随时准备帮助或服从某人 (suíshí zhǔnbèi bāngzhù huò fúcóng mǒurén)
"The assistant is at his boss’s beck and call."
"助理始终在老板的召唤下。" (Zhùlǐ shízhōng zài lǎobǎn de zhàohuàn xià.)
to be very thankful about something
to be responsible for something difficult or unpleasant
to have a personal reason to complain or criticize
To follow rules or policies strictly, often without question...
to stay more advanced or knowledgeable than others
a very thin person