マユコは十分ねむってはいない。

マユコは十分ねむってはいない。

Mayuko has not slept enough.

マユコは十分(じゅうぶん)ねむってはいない。

Mayuko wa jūbun nemutte wa inai.

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

十分 (じゅうぶん)

plenty; enough; sufficient; satisfactory; adequate; division into ten; perfectly; thoroughly; fully; in full

眠る (ねむる、ねぶる)

to sleep (not necessarily lying down); to die; to close one's eyes

要る (いる)

to need; to want

Readings: ジュウ、ジッ、ジュッ、とお、と

Meaning: ten

Readings: ブン、フン、ブ、わ.ける、わ.け、わ.かれる、わ.かる、わ.かつ

Meanings: part, minute of time, segment, share, degree, one's lot, duty, understand, know, rate, 1%, chances, shaku/100