单词

string straight strategy stimulate stock status steamer stamp start stable stadium spelling spherical speciality species soup souvenir solution somehow snack skilled skyscraper small-sized singular sitting-room signify similar shorthand show shift ship shampoo sharp setback settlement sensitive sequence seldom selection second second-hand screw sculpture scheme scar schedule system swell surroundings supply super suggestion subway subordinate stubborn strengthen store steer statement stage splendid specify spacious slide sizable somewhat social sign shock sheer simply sex serve sender section seaport scarf scientific scene satisfactory safely scarcely sale salesman sandwich switch say survival supreme superficial suitable stuff stress succession subscription stereo storey spoon spectacle stationery stake spare sort soda slogan sketch since signature shortage shelf shake session synthetic sense security symbol seaside score systematic symptom swear survive suspend survey swift surname sure support supplement supervise superior superb summit suggest suffer summarize sum suit success successive surplus subtle substantial subsequent subscribe submit subject style studio striking stretch strenuous strength straightforward stove storage step steep steady still statistical station steward structure state standard stall staircase staff stability spring sponsor sphere speed span specimen specific specialize special spaceship source sound sophisticated sometime solvency software society so-called smooth slope slightly slack skillful skill size situation site sincere simultaneous simplify silver significant signatory shutter shoulder shortly short shipment shilling shell sheet sharply share sham shaft several settle set service series separation senior select selfish segment secure secretary secondary seat screen search seal scrub scope scholarship scenery scarlet scarcity scarce sympathy scale synthesis saving suspect satisfaction sustain sample surface same surpass salary supermarket supervisor sum up sake safe substance summary successor sufficient substitute subdivide submarine strike