加号用于加法;减号用于减法.The plus sign is used in addition and the minus is used in subtraction.一元减号得到的运算对象的负值.The unary minus produces the negative of the value.如果该整数是负值, 那么将使用减号作为前缀.If the integer is negative, the representation ...
Environmental groups in Nevada and the Midwest have issued similar ultimatums.内华达和中西部的环保团体也发布了类似的最后通牒.A proactive teacher doesn't deliver ultimatums.[先发制人式]师并不下最后通牒....
给予破伤风类毒素加强剂与青霉素.A booster does of tetanus toxoid and penicillin should be administered.目的研制A+群脑膜炎球菌多糖-破伤风类毒素结合疫苗.Objective To prepare group A + C meningococcal polysaccharide conjugate vaccine.我需要 0. 5毫升破伤风类毒素.I want 0 ....
It can be difficult to ascertain the facts.可能难以查明事实真相。I'm going to ascertain the truth.我要查明真相.It's difficult to ascertain the coal deposits.煤储量很难探明....