Question

I waited for two hours in vain. (pattern) CCP 7

Accepted Answer

我白等了两个小时。[1] 白~(了) used to indicate somebody somebody spent time, energy and physical and financial resources on something, but did not see the expected result or due reward

Front	I waited for two hours in vain. (pattern)
Back	我白等了两个小时。 [1] 白~(了) used to indicate somebody somebody spent time, energy and physical and financial resources on something, but did not see the expected result or due reward
Page	CCP 7

I Waited Hours Vain Pattern 我白等了两个小时 白~(了 Spent

I Waited Hours Vain Pattern 我白等了两个小时白~(了 Spent