all (the) year round

1. 一年到头

All year round we get new members of staff coming in.

我们一年到头都有新进职员。

year after year

1. 每年, 年复一年

Tens of thousands of men, year after year, have travelled southwards to find work.

每年都有好几万人去南方找工作。

year by year

1. 每一年

The university gets bigger, year by year.

这所大学每年都在扩大。

year in year out

1. 年复一年地, 终年

There she lay year in year out, unable to move, and with no hope of recovery.

她年复一年地躺在那儿, 既不能动弹, 也没有康复的希望。