Machinery was often unprotected and accidents were frequent.
机器常裸露着，因此事故频仍。
1.无保护(人)的
2.没有防卫的,不设防的
3.无装甲的
4.没有得到关税保护的
1.无保护(人)的
2.没有防卫的,不设防的
3.无装甲的
4.没有得到关税保护的
1.in danger of being harmed, damaged, attacked, or infected because you do not have suitable protection
2.unprotected sex is sex that people have without protecting themselves against diseases or becoming pregnant
1.Shading of glass to reduce unwanted heat gain is critical . Unprotected glass is often the greatest source of unwanted heat gain in a home .
玻璃上的遮阳可以减少不需要的得热，这是非常必要的。没有保护的玻璃经常是室内过多不需要得热的主要来源。
2.Criminals began to bring liquor across the long, unprotected border with Canada or on fast boats from the Caribbean islands.
罪犯们开始把整个漫长的，无保护的边界与加拿大或从加勒比群岛快艇酒。
3.With two crews of Maxim machine-guns he took the position on the unprotected right flank of my platoons.
在两个马克沁机枪小组的掩护下我们占领了位于我们排毫无保护的右翼一侧的阵地。
4.Albert does acknowledge that television shows, on their own, do not comprise the only influences on a teenager to agree to unprotected sex.
阿尔贝他们自己也承认，那些电视节目的影响不止仅限于青少年所赞同的无保护措施的性行为。
5.They added that Bieber had not denied he had unprotected sex with her following the concert.
他们还补充道Bieber并未否认在演唱会后曾与她有过未保护性行为。
6.You changed my life I hope you know 'Cause now I'm lost So unprotected In a blink of an eye And never got to say goodbye !
你改变我的生活，我希望您能知道因为我现在失去那么保护在眨眼，还没来得及说再见！
7.Sub-fertility was defined as failure to conceive for at least a year after initiating unprotected sex with the goal of conceiving.
低生育能力的定义为：以生育为目的的无防护性生活超过一年，仍没有怀孕。
8.Some wives continued to have unprotected sex even though they knew their husbands were having affairs.
有些妇女即使知道丈夫出外寻花问柳，做爱时依然不采取防御措施。
9."If it wakes people up to the dangers of unprotected sex, we've been effective, " Silz said.
Silz说：“如果这样能够唤醒人们对无保护措施性爱的危患意识，那么我们就起到作用了。”
10.So far, discoveries include new details about the composition of the Sun and the effects of the solar wind on unprotected material.
到目前为止，较重要的发现包括定出更详细的太阳组成和太阳风对无遮蔽物质的影响。