I was on dialysis for seven years before my first transplant.

在第一次肾移植手术前，我已做了七年的透析。

《柯林斯英汉双解大词典》

Carter sifted through rubble in the Valley of the Kings for seven years before he located the tomb in 1922.

卡特在帝王谷的废墟中仔细搜寻了7年，直到1922年才找到这座陵墓。

youdao

Now Hebron was built seven years before Zoan in Egypt.

原来希伯仑城被建造比埃及的锁安城早七年。

youdao

With normal regulatory hurdles, Boston University's Edward Damiano estimates that it could be between five and seven years before an artificial endocrine pancreas is commercially available.

VOA: standard.2010.04.15

Currently,they can be held seven days. And it would boost from 120 days to two years the time a suspect can be held before being brought to trial.

VOA: standard.2009.09.10

Starting from 2013-14, this funding arrangement will last seven years before it is reviewed.

BBC: Royal funding changes become law

W. Bush administration had adopted a unilateral moratorium on underground testing seven years before.

CENTERFORSECURITYPOLICY: Are we serious about deterrence?

He added that realistically it would be six to seven years before the drug came to market.

BBC: Flu drug 'shows promise' in overcoming resistance