她并不是个才智非凡的人，但理解力很强。She is not an intellectual, but is quick on the uptake.他是个聪明的孩子, 理解力很强.He is a bright lad , always quick on the up take.他对英语的理解力很好.His understanding of English is good....
Encumbered by his heavy luggage, he could not walk fast.由于受到笨重行李的拖累, 他走不快.Lead weights and air cylinders encumbered the divers as they walked to the shore.潜水员向海岸走去时，铅坠和氧气罐使他们步履维艰。Lead weights and air cylinders encumbered...