safety n. 安全；保险；安全设备；保险装置；安打； 例句He assured himself of her safety. 他确定她是安全的。 With Volvo, safety was always the USP. ...
keep back 留下；隐瞒；阻止； 例句 She was unable to keep back her tears. 她无法忍住泪水。 Keep back straight and bend knees. 背要直，只弯两膝。 ...
safe的副词safely； safely adv. 安全地 稳定地 例句 They all arrived safely. 他们都平安抵达了。 The plane landed safely. 飞机安全着陆了。 Go to wo...
