ロバは丈夫な動物だ。

ろばは丈夫な動物だ。

Donkeys are tough animals.

ロバは丈夫(じょうぶ)な動物(どうぶつ)だ。

Roba wa jōbuna dōbutsu da.

ロバ (ロバ)

robber

は (は)

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

丈夫 (じょうぶ)

healthy; robust; strong; solid; durable

動物 (どうぶつ)

animal

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: ジョウ、たけ、だけ

Meanings: length, ten shaku, measure, Mr., Ms., height, stature, all (one has), only, that's all, merely

Readings: フ、フウ、ブ、おっと、それ

Meanings: husband, man

Readings: ドウ、うご.く、うご.かす

Meanings: move, motion, change, confusion, shift, shake

Readings: ブツ、モツ、もの、もの-

Meanings: thing, object, matter