The white sails billow with the breezes they catch.一张张白帆随着微风舞动。They skip rope and play catch, waiting for the bell.他们又是跳绳，又是玩接球，等着上课铃声响起。Most late developers will catch up with their friends.大多数身材发育迟缓者都会赶上他们的朋友。...
Our boss is a bit of a dictator.我们的老板有点霸道.A dictator must have a firm hand.独裁者的手段是很厉害的。He had been a dictator and a warlord who had oppressed and degraded the people of the South.他既独裁又好战，压迫侮辱南方人。They set the general up a...
Urea is commonly used as the source of nitrogen in foliage sprays.尿素作为氮素给源普遍地应用于叶面喷布.It must be broken down to urea, which consumes energy.它必须被分解成为尿素, 这时也要消耗能量.A kidney also takes urea and mineral salts out of the blood....