knapsack的复数形式怎么拼写？

knapsack的音标：knapsack的英式发音音标为：['næpsæk]knapsack的美式发音音标为：['næpˌsæk]...

" You can carry that blue knapsack. I'll take the tan one and the tripod. "“ 你可以帮着拿那个蓝背包, 我拿那个土黄色的和三脚架. ”Franklin placed the warm scarf Debbie had knitted for him in the top of his knapsack.富兰克林把黛比为他织的暖和的围巾放在背包的最上层....

n.（士兵或旅行者的）背包...

okay的音标：okay的英式发音音标为：[ˌəu'kei]okay的美式发音音标为：[o'ke]...

blackcurrant的音标：blackcurrant的英式发音音标为：['blækˌkʌrənt]blackcurrant的美式发音音标为：['blækˌkɜrənt]...

a box of pastels一盒粉笔The lobby is decorated in pastels.大厅用浅色装饰。Their pastels colored walls are topped with large rolls of barbed wire.他们用彩色蜡笔涂的墙壁的顶部布满了成卷的有刺铁丝....

retroactive的音标：retroactive的英式发音音标为：[ˌretrəʊ'æktɪv]retroactive的美式发音音标为：[ˌretroʊ'æktɪv]...

方法采用邻二氮菲法及蒽酮法分别测定铁及右旋糖酐含量.Method The contents of Fe and dextran were determined respectively byo - phenanthroline and anthrone methods....

n.（某些蛇、蝎子等分泌的）毒液( venom的名词复数 )，愤恨的感情或语言，毒物...

swallow的音标：swallow的英式发音音标为：['swɒləʊ]swallow的美式发音音标为：['swɑloʊ]...

n.闪闪发光，发微光( shimmer的名词复数 )v.闪闪发光，发微光( shimmer的第三人称单数 )...

螅形目，螅形目...

lobelet的音标：lobelet的英式发音音标为：['ləʊblɪt]lobelet的美式发音音标为：['loʊblɪt]...

n.（中学或大学的）一年级学生，新手...

His friends used to tease him about his tatty clothes.他的朋友过去常常笑话他破旧的衣服.There were a lot of guest houses which were very tatty.有许多小旅馆都又脏又乱。They seemed unreal and kind of tatty.这些礼拜仪式似乎不是真实的且显得有点寒酸....

Aegyptopithecus的音标：...

adj.（罗马教皇的）使节的，使者的，具有使者职权的...

n.江湖骗子，江湖医生...