【Copy url：ac99·net】 乐天

lè tiān carefree; happy-go-lucky; optimistic

使

shǐ to make; to cause; to enable; to use; to employ; to send; to instruct sb to do sth; envoy; messenger

维基百科

Wéi jī bǎi kē Wikipedia (online encyclopedia)

Wéi jī Bǎi kē Wikipedia (online encyclopedia)