Air pollution is claiming seven million lives every year and damaging children's development.

空气污染每年会夺走700万人的生命，并损害到儿童的发育。

He said it is wrong to think that learning to play a musical instrument improves a child's intellectual development.

他说人们错误地认为学习乐器有助于孩子的智力发育。

Then as their son's own speech develops, they began to use longer sentences again, mirroring the child's own development.

当他们的儿子开始自己讲话时，他们又重新开始使用较长的句子，这反映出孩子自身的成长。

There are other factors that can affect a child's development, such as genetics, adverse experiences such as neglect or abuse, and socioeconomic factors, Nagata said.

永田说，还有其他一些因素会影响儿童的发展，如遗传、被忽视或被虐待等不良经历以及社会经济因素。

During regular checkups, doctors can then watch a child's language and literacy development, as well as the parent-child relationship.

在定期检查期间， 医生可以观察孩子的语言和识字发展， 以及亲子关系。

Before the 1960s, bilingualism was considered a handicap that slowed a child's development by forcing them to spend too much energy distinguishing between languages, a view based largely on flawed studies.

六十年代以前，人们认为双语会阻碍孩童的发展，因为强迫孩童花太多精力在区别两种语言，但是这是基于有缺陷的研究。

Overall, the research suggests that traditional puzzles are an effective and accessible tool for aiding children's cognitive development, especially in the area of spatial skills.

总体而言，研究表明，传统拼图是帮助儿童认知发展的有效且易于使用的工具，尤其是在空间技能方面。