ballon-sonde

le ballon-sonde
A masculine noun is used with masculine articles and adjectives (e.g., l’homme, le soleil).
masculine noun
a. weather balloon
Laurent a utilisé un ballon-sonde pour effectuer des mesures en haute altitude.Laurent used a weather balloon to take measurements at high altitude.
b. sounding balloon
Des ballons-sondes ont été lancés pour relever la température et les taux d’humidité.The sounding balloons were launched to measure the temperature and humidity levels.
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