lactation duration泌乳: lactation持续: last; continue; sustain期: designated time泌乳持久性: persistency of lactation持续期: duration; extended period; persistent period; prolonged period下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:泌乳持续期，即可在微信中查询翻译
