Two cell layers ( diploblastic ) separated by a gelatinous mesoglea.两层细胞 ( 两胚层 ),中间是凝胶状的中胶层....

leak的第三人称单数（三单）为：leaks...

去核的...

lean的现在完成时为：leant...

n.衬垫...

adj.眼力好的，聪明的...

deleading的音标：deleading的英式发音音标为：[dɪ'ledɪŋ]deleading的美式发音音标为：[dɪ'ledɪŋ]...

去铅...

It's only in the bleachers where you have to sit in the sun.只有在露天看台上才得坐在阳光下.She's cheer captain and I'm on the bleachers.她是啦啦队队长,我只是看台上的一员.The bleachers were full to overflowing.看台上人满为患....

n.清洁剂，清洁工，擦亮粉，去污粉，清洁器...

n.闰年（二月加一日，故闰年为366日）...

Politicians say it could lead to a dissolution of parliament.政客们说这可能会导致议会解散。This can lead to bodily weakness and muscle wastage.这样可能会导致身体虚弱和肌肉萎缩。Lack of exercise can lead to feelings of depression and exhaustion.缺乏锻炼会导致抑...

cochleare的音标：cochleare的英式发音音标为：[kɒk'lɪər]cochleare的美式发音音标为：[kɒk'lɪr]...

cleardevice的音标：...

gleam的音标：gleam的英式发音音标为：[gli:m]gleam的美式发音音标为：[ɡlim]...

n.简短社论，编者按...

n.（盖屋顶用的）（薄）铅片； 铅框，领导( lead的名词复数 )，领先，主角，线索v.带路( lead的第三人称单数 )，领导，指挥，领先...

Boodleaceae的音标：...

adj.bleary（睡眼惺忪的，因缺觉而眼睛模糊的）的变形...

bougainvillea的复数形式为：bougainvilleas...

n.票据交换所...

mesoglea的音标：mesoglea的英式发音音标为：[mesəʊ'gli:ə]mesoglea的美式发音音标为：[ˌmesˌmezə'gliə]...

adj.令人快乐的，愉快的，舒适的n.快乐...

Gleamax的音标：...

leases的音标：...

In youth the hours are golden in mature years they are silver, in old age they are leaden.青年时代是黄金的,壮年时代是白银的,老年时代是灰铅的。He heard the father's leaden footsteps move down the stairs.他听见父亲蹇步下楼。His pass described a perfect...

leaves的音标：leaves的英式发音音标为：[li:vz]leaves的美式发音音标为：[livz]...

vt.锻，压延，将…锤薄...

尽释前嫌，消除隔阂，以正视听...

It was no defence to plead that they were only obeying orders.辩称他们只是在服从命令站不住脚。They will plead with him to pull back from confrontation.他们将请求他退出冲突。Are you ready to plead against the case offered by the defendant?你准备好反驳辩护人...