straight [stret] 词频1 词根: str-

adj. 直的;连续的;直率的;整齐的; adv. 直地;直接地;坦率地;立即; n. 直线;直线部分;

💡 straight(draw tight)→直立的；正直的；直线；直接地；坦白地

"This dessert can be served straight from the fridge."

近义：raised, rigid, standing, upright, erect, honest 反义：matted, ruffled, screwed, skewed, tangly, twisty

thirty ['θɝti] 词频1

n. 三十;三十个;三十年代;三十的记号; adj. 三十的，三十个的; num. 三十;三十个;

💡 thir=three三+ty十 → 三十

"There are thirty people in the classroom, counting the teacher."

back [bæk] 词频1

n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背; vt. 使后退;支持;加背书于;下赌注于; vi. 后退;倒退; adj. 背部的;后面的;以前的;拖欠的; adv. 以前;向后地;

"Water allotments to farmers were cut back in the drought."

近义：second, support, endorse, illustrate, document, backtrack 反义：impel, inch, save, loop, sheer, slew

eight [et] 词频1

num. 八;八个;第八; n. 八;八人（或物）一组;八人划船队; adj. 八个的;

"The government's majority has been whittled down to eight."

folding [fəuldiŋ]

adj. 可折叠的; v. 折叠，对折交叠( fold的现在分词 );包围;包起;笼罩;

"The room was divided by a folding screen."

近义：pleat, pleating, plication, fold, penning, enclosing 反义：rigid, stiff, tough, wiry