キートンはおそらく鳥や動物たちはこれらの磁力線について知っているのだろうと想定した。

Sentence Analyzer

English Translation

Keeton supposed that perhaps bird and animals know about these lines.

Furigana

キートンはおそらく鳥(とり)や動物(どうぶつ)たちはこれらの磁力線(じりょくせん)について知(し)っているのだろうと想定(そうてい)した。

Romanji

Ki-Ton wa osoraku tori ya dōbutsutachi wa korera no jiryokusen nitsuite shitteiru no darou to sōteishita.

Words

は (は)

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

恐らく (おそらく)

perhaps; likely; probably; I dare say

鳥 (とり)

bird; bird meat (esp. chicken meat); fowl; poultry

や (や)

such things as (non-exhaustive list related to a specific time and place); and ... and; the minute (that) ...; no sooner than ...; as soon as; punctuational exclamation in haiku, renga, etc.; interjection expressing surprise; hi; plain copula; yes; what?; indicates a question

これ等 (これら)

these

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

磁力線 (じりょくせん)

line of magnetic force

に就いて (について)

concerning; regarding; per (e.g. 100 yen per person); for every

知る (しる)

to be aware of; to know; to be conscious of; to cognize; to cognise; to notice; to feel; to understand; to comprehend; to grasp; to remember; to be acquainted with (a procedure); to experience; to go through; to learn; to be acquainted with (a person); to get to know; to concern

だ (だ)

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

と (と)

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

想定 (そうてい)

hypothesis; supposition; assumption