/ɪ'tɜ:nəlɪ; ɪ`tɝnlɪ/
adv
1 throughout all time; for ever 永远地; 永久地.
2 (infml 口)
(a) always 永远
*I'll be eternally grateful to you. 我永远感激你.
(b) (too) frequently （过于）频繁
*He's eternally telephoning me early in the morning. 他总是大清早给我打电话.

adv
for ever
　I'll be eternally grateful (=very grateful) to you for this.
informal always or very often
= constantly
　He's the sort of player who's eternally arguing with the referee.