The instructors were slacking on the job.教员们对工作松松垮垮.He had never let a foreman see him slacking.他从未在哪个工头面前表现出丝毫懈怠。The rain was slacking and we were moving along.雨稀松下来,而我们又走动了.He stared emptily at the floor, his arms hang...
Conclusions Fluoride mouth rinse can effectively prevent and enamel decalcification in fixed - orthodontic treatment.在固定正畸治疗中,含氟漱口液能有效防治牙釉质脱矿.There was a moose head on the wall. Some wag had put a cigarette in its mouth....
研究了偕二金属有机试剂3与氯化三烷基锡和碘的非对映选择性反应.The diastereoselective reactions of organogembismetallic reagent 3 with trialkyl tin chloride and iodine were studied....