When baby phonate, parents can repeat children's voice, and looked at the baby face smiling.
当婴儿出声时，父母也可以重复儿童的声音，并望着婴儿的脸蛋微笑。
2
T he obtained data show that:the complex of humic acid and sodium-lignosul phonate can elevate the discharge capacity and rechargeable acceptance ability of lead-acid battery;