查询词典 back and forth

put one's back into sth：孜孜不倦地做某事

slap sb. on the back 拍拍某人肩膀(表示赞许或鼓励) | put one's back into sth. 孜孜不倦地做某事 | put one's back up [口](使)发怒; (使)发生反感; (使)倔强起来

back ratch：后隔距

后梁 back rail | 后隔距 back ratch | 后筘 back reed

ring back：回叫/回铃

回叫 Call BacK CBK | 回叫/回铃 ring-back | 回铃音/振铃音 ring-back tone

back rise：后直裆,[粤]后浪

back cover front 后搭前,后盖前 | back rise 后直裆,[粤]后浪 | back stitch 回针,倒针,[粤]返针

sack：麻袋

sack n.麻袋 记法:麻袋(sack)把后背(back)压成了S形. lack n.缺少 记法:后背(back)压成了S形就缺少(lack)了脊梁骨(l). tack n.大头钉 T的形状像大头钉. 记法:后背(back)缺少了脊梁骨大头钉(tack)来代. wack n.怪人 W的形状像翅膀.

saddle：马鞍

而有些早期梳状椅背带有卡布里腿、和看起来像马鞍(saddle)的宽厚椅座. 除此也有做成箍形背(hoop-back)、轮形背(wheel-back)、梯形背(ladder-back)的椅子,而温莎椅乃带有宽大的卡不里腿或简单的车枳腿. 17世纪早期,

back-up safety device：备用安全装置

back up protection 后备保护 | back up safety device 备用安全装置 | back up supply 备用电源

back-up safety device：后备安全设备

后备继电保护 back-up relaying | 后备安全设备 back-up safety device | 后备电源 back-up source

back-up safety device：备用安全设备,备用安全装置

back-up roll | 支撑轧辊,支撑辊 | back-up safety device | 备用安全设备,备用安全装置 | back-up source | 后备电源,备用电源

Back to the salt mine：重新回到工作岗位上

Back to the drawing board 从头开始,失败后另起炉灶 | **Back to the salt mine 重新回到工作岗位上 | Back to the wall 走投无路,陷于困境

air ventilator：通风管

air purifier 空气滤清剂 | air ventilator 通风管 | air-bleed 空气分泄器

sound motion picture, talkie：有声电影

silent cinema, silent films 无声电影 | sound motion picture, talkie 有声电影 | cinemascope, CinemaScope 西涅玛斯科普型立体声宽银幕电影,变 形镜头式宽银幕电影