📝 您未登录，登录后完成练习可保存成绩、查看最佳记录。
总字符
0
正确字符
0
错误字符
0
错误率
0.00%
耗时(秒)
0
速度 WPM
0
0 / 18
1We're eating more fish than ever these days. At around 20 kilograms per person global fish consumption is now more than
2twice what it was in the 1960s. What's really remarkable, though, is where that fish comes from. For the first time in
3human history, most of our aquatic (水产的) food now comes from farming rather than fishing. People ate around 73 million
4tonnes of farmed fish-just more than half of the volume of fish that humans consumed--in 2014. That's out of a total
5fish supply of 167 million tonnes; the remaining 20million or so tonnes go into things like animal feed and medical
6products. To keep eating fish at the current rate, we're definitely going to need to keep aquaculture (水产养殖) developing.
7That's because the volume of fish caught in the wild has leveled off since the 1990s. Back in 1974, only 10% of marine
8fish stocks had been overfished. Now, more than three-tenths are. Only a tenth of our oceans' fish stocks could sustain
9heavier fishing than current levels. But while catchings at sea have suffered, fish-farming has been growing at a fast
10rate. A lot of that is coming from China, which produces 60% of the world's farmed fish. In fact, some 35 countries,
11including China, now produce more farmed than wild-caught fish. This shift toward aquaculture isn't just good for
12ensuring salmon (三文鱼) on your plate; it's also crucial to ensuring food security and sustainability. By 2050, the world
13will need to feed an estimated 9.7billion people. They'll have to get their protein somewhere. However, raising cattle,
14pigs, and other land-based animals requires vast sums of grain and water. For example, pound for pound, beef requires 15
15times more feed to raise than carp, a freshwater fish farmed all over Asia. That grain-and the water needed to grow
16it-could be consumed by people instead. However, aquaculture is no silver bullet. In some southeast Asian countries,
17shrimp farming does disastrous damage to marine ecosystems. Despite these problems, however, shrimp continues to be
18among the most popular seafoods worldwide.
🎉 全部完成！共 18 行
⏸ 暂停/继续：点击上方「⏸ 暂停 (F8)」按钮，或按 F8 键（F8 不是打字常用键，不会和输入冲突）；切到别的窗口/标签页会自动暂停计时，回到本页需按 F8 或点击按钮手动继续。暂停期间一旦输入字符会自动恢复计时（防止暂停中偷打字刷成绩）。