a. 更难的；更努力的；更坚固的（hard的比较级）

a not easy; requiring great physical or mental effort to accomplish or comprehend or endure

a dispassionate;

a resisting weight or pressure

s very strong or vigorous

s characterized by effort to the point of exhaustion; especially physical effort

a produced without vibration of the vocal cords

a (of light) transmitted directly from a pointed light source

a (of speech sounds); produced with the back of the tongue raised toward or touching the velum

s given to excessive indulgence of bodily appetites especially for intoxicating liquors

s being distilled rather than fermented; having a high alcoholic content

s unfortunate or hard to bear

s dried out

r with effort or force or vigor

r with firmness

r earnestly or intently

r causing great damage or hardship

r slowly and with difficulty

r indulging excessively

r into a solid condition

r very near or close in space or time

r with pain or distress or bitterness

r to the full extent possible; all the way