比較不好訓練
A new study suggests that puppies, like human teenagers, go through rebellious stages in their lives, too.
新研究顯示，小狗跟青少年一樣會經歷叛逆期。
go through~經歷=experiencerebellious stages叛逆期
Researchers observed the behaviors of 378 canines and found that dogs in their adolescence (about 8 months old) can easily become frustrated with their owners, just like how human teenagers behave towards their parents.
研究人員觀察了378隻狗的行為，發現青春期（約8個月大）的狗會對主人鬧脾氣，就像是青少年對他們父母親的行為一樣。
observe(v.)觀察teenage period青少年時期;青春期=puberty=adolescencefrustrated(adj.)挫敗的;失意的;洩氣的upset(adj.)沮喪的、生氣的、難過的behave(v.)(以某種方式)行事，表現、(在某种環境或條件下)做出特定行為、守規矩
Owners generally find their dogs “less trainable” during their adolescence.
飼主們一般認為他們的狗在青春期的時候「比較不好訓練」。
trainable(adj.)可訓練的
Moreover, dogs in their teenage phase responded less to a “sit” command given by their owner than when the command was given by a stranger.
此外，處於青春期的狗對主人發出的「坐下」指令，照做的次數比由陌生人發出指令的時候少。
moreover(adv.) 而且，再者，此外=what is more=furthermorephase(n.)(發展或變化的)階段，時期、(月亮的)位相;盈虧respond to…對…有反應;回應;應對command(n.)命令;指示;指令=ordergive a command or order 下指令(which is) given by…由…下的(指令)
Fortunately, research shows that for most dogs, this naughty adolescence was just a passing phase.
幸運的是，研究指出，對於大多數的狗來說，頑皮的青春期只是一個過渡階段。
naughty(adj.)淘氣的;調皮的;不聽話的passing(adj.)短暫的，一時的=lasting only for a short time
According to animal behavior researcher Lucy Asher, “It’s very important that owners don’t punish their dogs for disobedience… This would be likely to make any problem behavior worse, as it does in human teens.”
動物行為研究者露西·阿舍指出：「主人不該因為狗不聽話就處罰他們……這很可能會使任何問題行為變得更糟，就像處罰人類青少年一樣。」
punish(v.)懲罰、處罰disobedience(n.)不服從;不聽話obey(v.)服從disobey(v.)不服從civil disobedience公民不服從as(conj.)如同does= make any problem behavior worseteens=teenagers