慢了

too slow

→ 慢
phrase Uncommon #13,053
too slow 了 often indicates that something has become slow or is now in a slow state; the exact meaning depends on context.
CH: 我们走得太慢了。
EN: We’re moving too slowly.

那结果你排队的时候跑慢了谁

So who did you run slower than while waiting in line?

— Hi, Mom (2021)

我的脉搏慢了下来。

My pulse slowed down.

慢了一步

I was one step too slow.

— 红猪 (1992)

进展慢了下来呢,老师很失望啊!

Progress has slowed down. The teacher is very disappointed!

— 大逃杀 (2000)

我慢了

I endured it.

— 满江红 (2023)

但是你们慢了十秒

But you were ten seconds late.

— 虎胆龙威 (1988)

维克托的反应稍慢了一点。

Victor was a little slow to react.