月経周期は約４週間です。

月経周期は約４週間です。

My menstrual cycle is about every four weeks.

月経(げっけい)周期(しゅうき)は約(やく)４週間(しゅうかん)です。

Gekkei shūki wa yaku yon shūkan desu.

月経 (げっけい)

menstruation; menstrual period

周期 (しゅうき)

cycle; period

は (は)

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

約 (やく)

approximately; about; promise; shortening; reduction; simplification; contraction (in phonetics)

四 (し、よん、よ)

four

週間 (しゅうかん)

week; weekly

です (です)

be; is

Readings: ゲツ、ガツ、つき

Meanings: month, moon

Readings: ケイ、キョウ、へ.る、た.つ、たていと、はか.る、のり

Meanings: sutra, longitude, pass thru, expire, warp

Readings: シュウ、まわ.り

Meanings: circumference, circuit, lap

Readings: キ、ゴ

Meanings: period, time, date, term

Readings: ヤク、つづ.まる、つづ.める、つづま.やか

Meanings: promise, approximately, shrink

Reading: シュウ

Meaning: week

Readings: カン、ケン、あいだ、ま、あい

Meanings: interval, space