Thorpe next set out to determine exactly when the chaffinch learns to sing.接着,索普就开始研究苍头燕雀是在什么时候学唱歌的.The chaffinch has three or four songs and produces them in a specific order.苍头燕雀合唱三、四种歌,唱的时候按着一定的先后次序....
伦尼放缓车速，听到自行车轮胎在湿漉漉的路面上发出嘶嘶的响声。The tires of Lenny's bike hissed over the wet pavement as he slowed down.一阵嘶嘶的声音说明氧气正在放出.A steady hiss denoted that the oxygen was on.蒸汽漏出来时发出嘶嘶的声音.The steam escaped with a hissing soun...
当下胚轴穿出种皮约1—2毫米时,生毛细胞的外壁向外突出,形成下胚轴毛.When hypocotyl emerges out of the seed coat for 1 - 2 mm.主要用于高档船舶的船壳 、 集装箱外壁和火车、汽车的面漆使用.For super ship hull, container exteriors, train and car.风暴像巨大的攻城锤一样连续击打着灯塔的外壁.The storm hammered ...