keep at sth是什么意思？

keep at sth的音标：...

...

Eastward flows the Changjiang River.大江东去.A powerful snow storm is moving eastward...一场强暴风雪正在东移。The river here tends eastward.这条河从这里向东流.The crowd is heading eastward,believing that they can find gold there.人群正在向东移去,他们认为在那...

branding的音标：branding的英式发音音标为：['brændɪŋ]branding的美式发音音标为：[]...

“使伤心”的拼音为：shǐ shāng xīn...

claviform的音标：claviform的英式发音音标为：['klævɪfɔ:m]claviform的美式发音音标为：['klævəˌfɔm]...

reek的现在完成时为：reeked...

狗鱼主要生活在大江大湖中。The Pike lives mainly in large rivers and lakes.这些河流里盛产鲑鱼和狗鱼.The rivers were rich in salmon and pike.河鲈属的''.'鱼'.''任何一种有关或类似的鱼类, 例如狗鱼或''.'双'.'''...

Fallopian tubes and ovaries are adnexa of the uterus.输卵管和卵巢是子宫的附属部分.Fallopian tube scarring can cause infertility and ectopic pregnancy.输卵管瘢痕化会引起不育和异位妊娠.Immediately below the fallopian tubes, the anterior and posterior p...

n.象差计...

supple的音标：supple的英式发音音标为：['sʌpl]supple的美式发音音标为：['sʌpəl]...

assail的一般过去时为：assailed...

“告知”的拼音为：gào zhī...

“送话器”的英语可以翻译为：[电] microphone，transmitter，telephone transmitter ...

颅角测量法...

loftiness的音标：...