There are jobs more dangerous than truck driving; for instance, training lions.有的工作比驾驶卡车更危险, 例如驯狮.Ethiopia, for instance uses the equivalent of just twenty kilos of oil per head a year.比如说，埃塞俄比亚每年的人均消费支出仅相当于20公斤的石油。They ...
Declaration of Independence的音标：Declaration of Independence的英式发音音标为：[ˌdeklə'reiʃən ɔv ˌɪndi'pendəns]Declaration of Independence的美式发音音标为：[ˌdɛklə'reʃən ʌv ˌɪndɪ'pɛndəns]...
水银的密度比水大得多.Mercury has a much greater density than water.水银的储存量并不丰富,分布也不广泛.Mercury is by no means, abundant or widely distributed.即使在室温下,水银的发挥性也很显著.Mercury is appreciably volatile even at room temperature....