They had to edge their way along this, sometimes wading across shallow streams, or swimming across deep pools.
他們不得不側著身子往前走，有時過淺溪，有時游過深潭。
新概念英語第三冊
Lesson 42 Modern cavemen
?? 句中詞匯解析
從本句中提取的重要詞匯
adv. 有時，間或;時而;
?? sometime某一時間的+s表副詞 →有時
"Even friends disagree sometimes."
即便是朋友有時也有分歧。
近義：occasionally, oft, once, rarely, betweentimes, betweenwhiles
反義：invariably, periodically, repeatedly, steadily, usually, consistently
prep. 穿過;橫穿，橫過;與…交叉;在…對面;
adv. 橫過，越過;在對面;交叉;斜對面;
?? cro, cru =cross,表示”十字形,交叉”
"The only access to the farmhouse is across the fields."
去那農舍的唯一通路是穿過田野。
近義：through, athwart, on, per, thru, to
swimming
['sw?m??]
n. 游泳;眩暈;
v. 游泳( swim的現在分詞);漂浮;浸，泡;旋轉;
?? swimm=swim游泳+ing行業,狀態，行為 →游泳
"Swimming is good exercise."
游泳是有益的運動。
近義：lightheadedness, seasickness, vertigo, wooziness, dizziness, airsickness
n. 邊;優勢;（懸崖、峭壁的）邊緣，端;鋒利，尖銳;
vt. 在…上加邊界;使漸進;給（刀刃）磨邊，使鋒利;修整;
vi. 慢慢向前移動，側身移動;
?? 過去(ed)哥哥(ge)在 邊緣
"The workers skirted the edge of the cliff on a geological survey."
工人們沿著崖壁作了一次地質勘察.
近義：hone, point, sharpen, strap, strop, taper
adj. 淺的，膚淺的;表面的，皮毛的;（水，器物等）淺的;（呼吸）淺的;
n. 淺處;淺灘;
v. 使變淺;使變淺薄;
?? shall(將要)+low(低的): 淺灘
"a shallow, unsatisfying relationship"
淡薄而不令人滿意的關系
近義：shoal, superficial, heartless, soulless, hollow, cursory
反義：meticulous, minute, probing, scrupulous, thorough, thoroughgoing