ナイフには注意しなくてはならない。

Sentence Analyzer

ないふ 注意しなくて はならない

English Translation

You should be careful with a knife.

Furigana

ナイフには注意(ちゅうい)しなくてはならない。

Romanji

Naifu ni wa chūishinakute wanaranai.

Words

ナイフ (ナイフ)
knife
()
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
注意 (ちゅうい)
caution; being careful; attention (heed); warning; advice
()
if ... then; when; and; why don't you...?; the more (one does something); because; since

Kanji

Readings: チュウ、 そそ.ぐ、 さ.す、 つ.ぐ
Meanings: pour, irrigate, shed (tears), flow into, concentrate on, notes, comment, annotate
Reading: 
Meanings: idea, mind, heart, taste, thought, desire, care, liking