observable /əbˈzɚvəbəl/ adjective Learner's definition of OBSERVABLE
: possible to see or notice : able to be observed看得见的;察觉得到的 -
The trend is observable [=noticeable, perceptible] all over the country.国内到处都可看出这种趋势。
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the size of the observable universe可观测得到的宇宙的大小
— observably
/əbˈzɚvəbli/ adverb