contraception
noun [ U ] uk/ˌkɒn.trəˈsep.ʃən/ us/ˌkɑːn.trəˈsep.ʃən/
C2 避孕（法）;节育（法）
(the use of) any of various methods intended to prevent a woman becoming pregnant
They offer impartial advice on contraception. 他们提供公正客观的避孕建议。
What is the most reliable form/method of contraception? 最可靠的避孕方式／方法是什么？