in vain; for nothing; without any result

to entrust someone with a task or responsibility; to ask for a favor or help; to act as a trustee

the time between sunrise and sunset; during the day

To entrust something to the care or management of others.

white; snowy; pure; bright; (literary) white; bright

(colloquial) a shill or plant who helps a swindler lure victims into a scam; often used as 托儿 tuō​r