Condoms are an effective method of birth control if used with care.

避孕套如果谨慎使用，是一种有效的节育方法。

《柯林斯英汉双解大词典》

Of these, around 4.4 billion condoms were used for family planning and 6.0 billion condoms for HIV prevention.28.

这其中约有4.4亿被用在家庭计划中，约6亿被用来预防HIV感染。

youdao

Used condoms and needles litter the streets and park areas where a lot of children play and old people are afraid to come out of their homes after dark.

BBC: Luton prostitute petition: Residents target councillors

One in four men and one in six women said they now used condoms consistently during sex compared with less than one in five men and one in seven women in 1990's survey.

BBC: 'Promiscuous' Britain uncovered

The non-oxynol nine gel, was based on one already used in condoms as a spermicide.

BBC: Seaweed gel could protect against HIV