航海年历中有日 、 月 、 潮汐等的资料.A nautical almanac gives information about the sun, moon, tides, etc.恒星年不用于编制年历.The sidereal year is not used to construct a calendar.乔写信去要一份免费赠阅的年历.Joe sent away for a free almanac....
He was an understudy to Charlie Chaplin on a tour of the USA.他是查理·卓别麟美国巡演期间的替角儿。The understudy was substituted when the leading actor fell ill.主角演员患病,由替角代替演出.The understudy is substituted when the leading actor falls ill...
Vast tracts of the country are wild and undeveloped...乡间大片大片的荒地尚未开发。Each sequence is made of transgressive system tracts and highstand system tracts.认为娄山关组由7个三级层序组成,层序界面为古岩溶不整合面或暴露带,每个层序都由海进体系域和高水位体系域构成.Large tracts of w...