The strike is entering its fourth week.

罢工正进入第四周。

《牛津词典》

I go home every fourth week.

我每四个星期回家一次。

youdao

By my fourth week of daily drawing, I hit a wall.

在坚持每天创作的第四周里，我碰壁了。

youdao

By the thirty-fourth week, it could remember the sound for four weeks.

VOA: special.2010.11.30

And it's about my third or fourth week of graduate school and I'm pretty nervous about this.

那时，研究生学习才开始三到四周,我很紧张。

耶鲁公开课 - 心理学导论课程节选

They are slated to blast off from Cape Canaveral, Florida the second and fourth week in June.

CNN: Race to Mars begins a distant search for life

It is also only the fourth week since then that bearish sentiment has been above its historical average of 30%.

FORBES: Bullish Sentiment Falls To 10-Week Low

After Barbier's rulings, the trial's fourth week continued with more testimony by witnesses for Transocean, whose chief had executive testified Tuesday.

NPR: Claims Against BP Contractors Dismissed At Trial