n. tunnage
misc. gross tonnage
在世界不少地区，抗菌剂产量的总吨数中，有50%以上是用于产肉动物。
In several parts of the world, more than 50% in tonnage of all antimicrobial production is used in food-producing animals.
据某些估计显示，与人体使用相比，动物和鱼类中使用的抗生素在绝对总吨数方面至少达1000倍。
Some estimates suggest that antibiotic use in animals and fish is at least 1000-fold greater in terms of absolute tonnage compared with use in humans.
鳕鱼无疑是冰岛最有价值的鱼类，但其存量正在衰减：从九十年代以来，其捕获的总吨数大约是每年20万吨，相比而言六十年代是大约40万吨。
Cod is far and away Iceland’s most valuable fish, but its stocks are falling: the tonnage caught since the 1990s has been about 200,000 a year, compared with about 400,000 in the 1960s.
应用推荐