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ことはできないだろう

would not be able to

→ こと
phrase Uncommon #18,068
would not be able to Used to express that something probably would not be possible. In polite speech, だろう may become でしょう.
JA: 時間がなければ、最後まで読むことはできないだろう。
EN: If there isn't enough time, I probably won't be able to read to the end.

太陽の光がなければ、私たちは何も見ることはできないだろう。

Without sunlight, we wouldn't be able to see anything.

私が外国人なら、生魚を食べることはできないだろう。

If I were a foreigner, I probably wouldn't be able to eat raw fish.

今日の午後この仕事を全部仕上げることはできないだろう。

I probably won’t be able to finish all this work this afternoon.

彼は妻の死から立ち直ることはできないだろう。

He probably won't be able to recover from his wife's death.

水がなかったならば、何物も生きることはできないだろう。

If there were no water, nothing could live.

空気と水がなければ、私たちは生きることはできないだろう。

Without air and water, we wouldn't be able to live.