70 Heb “Their strength is dry.” This is a figurative nuance of the word “dry” which 677 נָשַׁת Qal.1 explain as meaning “fails.” The idea of “strength to do battle” is implicit from the context and is supplied in the translation here for clarity.
71 Heb “They have become women.” The metaphor has been turned into a simile and the significance of the comparison drawn out for the sake of clarity. See 50:37 for the same figure.
72 Heb “Her dwelling places have been set on fire. Her bars [i.e., the bars on the gates of her cities] have been broken.” The present translation has substituted the word “gates” for “bars” because the intent of the figure is to show that the bars of the gates have been broken giving access to the city. “Gates” makes it easier for the modern reader to understand the figure.

In other versions

The warriors of Babylon have ceased fighting;

they remain in their strongholds;

their strength has failed;

they have become women;

her dwellings are on fire;

her bars are broken.

Babylon’s warriors have stopped fighting;

they remain in their strongholds.

Their strength is exhausted;

they have become weaklings.

Her dwellings are set on fire;

the bars of her gates are broken.

Babylon’s warriors have stopped fighting;

they sit in their strongholds.

Their might is exhausted;

they have become like women.

Babylon’s homes have been set ablaze,

her gate bars are shattered.

Her mightiest warriors no longer fight.

They stay in their barracks, their courage gone.

They have become like women.

The invaders have burned the houses

and broken down the city gates.

The warriors of Babylon have ceased to fight,

they remain in the strongholds,

their power has dried up,

they have become as women.

Her dwelling places are set on fire,

her bars are broken.

The mighty men of Babylon have forborn to fight,

They have remained in their holds:

Their might hath failed; they became as women:

They have burned her dwellingplaces;

Her bars are broken.

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