one in a thousand
千に一つ；珍しい［非常にりっぱな］もの［人］
one in every 30 children
子ども３０人につき１人
one in ten of us
１０人に１人
One is black and the other is white.
一方は黒で他方は白
One is often judged by the company one keeps.
人はしばしば付き合う友人によって評価される
One man couldn't lift the box; no, not even half a dozen.
その箱は１人では持ち上げられまい，いや６人でもだめだ
One man's meat is another man's poison.
((諺))甲の薬は乙の毒
One man's meat is another man's poison.
人の好みはさまざまだ；((諺))甲の薬は乙の毒
One may as well be hanged [hung] for a sheep as (for) a lamb.
((諺))子羊を盗んでも絞首刑になるのなら羊を盗んだほうがましだ；毒を食らわば皿まで
one million square [cubic] feet
百万平方［立方］フィート
