Ritalin is a medicine doctors use for ADHD, a condition where a person — often a child — is too active and finds it very hard to keep their mind on one thing for long. For some people it helps them pay attention and feel less driven to jump from thing to thing.

Ritalin利他能 is a medicine doctors use for ADHD是醫生用來治療ADHD(注意力不足過動症)的藥 a condition where a person — often a child — is too active這是一種讓人（常常是小孩）過度活躍的狀況 and finds it very hard to keep their mind on one thing for long而且很難把注意力長時間放在一件事上 For some people it helps them pay attention對某些人來說它能幫助他們專心 and feel less driven to jump from thing to thing並減少那種一直想跳來跳去的衝動

It is a brand name from the 1940s; the chemical inside has a long scientific name, and other companies sell the same kind of medicine under other names.

It is a brand name from the 1940s這是一個1940年代的品牌名 the chemical inside has a long scientific name裡面的化學成分有個很長的學名 and other companies sell the same kind of medicine under other names其他公司也用別的名字賣同一種藥

Though actually, it is not a “smart pill” for everyone, and it is not something you take because a friend has some. A doctor has to decide if it is right, because it is a strong medicine and the law treats it carefully.

Though actually不過其實 it is not a "smart pill" for everyone它不是誰吃了都會變聰明的「聰明藥」 and it is not something you take because a friend has some也不是因為朋友有就可以拿來吃的東西 A doctor has to decide if it is right必須由醫生判斷是否適合 because it is a strong medicine因為這是藥效很強的藥 and the law treats it carefully而且法律對它管制得很嚴謹

In everyday talk, people still say “Ritalin” even when the box shows another brand.

In everyday talk在日常對話中 people still say "Ritalin"人們還是會說「Ritalin」 even when the box shows another brand即使盒子上寫的是另一個牌子