observational

1. ADJ Observational means relating to the watching of people or things, especially in order to learn something new. (尤指爲(wèi)獲取新信息)觀察的[正式]

...observational humour. ...可觀察到的幽默。

The observational work is carried out on a range of telescopes. 觀測(cè)工作是借助於各種望遠(yuǎn)鏡來(lái)進(jìn)行的。