In "Some airlines, however, are wary of gearboxes" (l.15), "...
Judge the following items about the ideas and the linguistic
structures of the text above.
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2.watchful, careful, alert, cautious, prudent, attentive, vigilant, circumspect, heedfulKeep a wary eye on children when they are playing near water.
c-
wary means to have a suspicious approach to something, which in this context means cautious
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