Sentence examples of "trace elements" in English

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How many chemical elements compose water? ¿Cuántos elementos químicos constituyen el agua?
We must go back to the Middle Ages to trace the origin. Debemos volvernos a la edad media para rastrear su origen.
Iron and oxygen are elements. El hierro y el oxígeno son elementos.
The police looked everywhere and could find no trace of Tom. La policía buscó por todas partes y no pudo encontrar rastros de Tom.
It is possible to determine a rock's age thanks to radioactive elements. Es posible establecer la edad de las rocas a través de elementos radiactivos.
The police looked everywhere and couldn't find any trace of Tom. La policía buscó por todas partes y no pudo encontrar ningún rastro de Tom.
Miss Wang has a trace of obstinacy in her, but she is still a good student. La señorita Wang tiene un vestigio de obstinación en ella, pero aun así es una buena estudiante.
He's disappeared without a trace. Él desapareció sin dejar rastro.
Some day, the boy disappeared without a trace. El niño desapareció de un día para otro sin dejar rastro.
Tom disappeared without leaving a trace. Tom desapareció sin dejar rastro.
He disappeared without a trace. Desapareció sin dejar rastro.
Tom disappeared without a trace. Tom desapareció sin dejar rastro.
not a trace of her no un rastro de ella
not a trace of him ni rastro de él
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