understands v.懂得；明白；理解；認識到；聽說；獲悉understanding (n.) understandable (adj.) understand (v.) understand vt. 理解；懂；獲悉；推斷；省略；明白 vi. 理解；懂得；熟悉undersign (v.) underside (n.) undershoot (v.) undershirt (n.) underserve (v.) undersea (adj.) underscore (v.) underrate (v.) underprivileged (adj.) underpinning (n.) underpin (v.) underpay (v.) underpass (n.) underpants (n.) undernourished (adj.)