- rough: adj 1 粗糙的 （opp smooth）; 凹凸的，崎嶇不平的 （opp level）。2 粗毛的，多毛的，蓬亂的（頭發）。...
- timber: n 1 原木，木材，木料。2 （可作木材的）樹木；森林；〈美國〉森林地，林場。3 橫木，棟木；【造船】船...
They are adapted for rough, heavy service.
As a rough guide it can be generally stated that for each 1p spent on an admixture then approximately 4-5p worth of cement can be saved.
He led an adventuresome, rough - and - tumble life
Mountains and ridges of rough lava are furrowed with narrow valleys of alkaline soil sheltering a few grasses and shrubs
And he must have a fire in the middle of summer ; and joseph s bacca pipe is poison ; and he must always have sweets and dainties, and always milk, milk for ever - heeding naught how the rest of us are pinched in winter ; and there he ll sit, wrapped in his furred cloak in his chair by the fire, some toast and water or other slop on the hob to sip at ; and if hareton, for pity, comes to amuse him - hareton is not bad - natured, though he s rough - they re sure to part, one swearing and the other crying