例句：

　　Skill comes only with practice, patience, and persistence.

　　只有通過練習(xí)、耐心和堅持不懈才能獲得技能。

　　In practice, however, such an attitude is counterproductive.

　　然而在實(shí)際中，這種態(tài)度會適得其反。

　　Educational practice is liable to sudden swings and changes.

　　教育實(shí)踐活動易出現(xiàn)突然的轉(zhuǎn)向和變化。