Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/44d6a87acf120db2a0551ad14eafd26b.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 breathing valve例句_breathing valve英汉例句_breathing valve双解例句_94生活常识网有道词典
One hypothesis suggests that by closing tiny breathing-valves in their exoskeletons called spiracles, insects prevent evaporation. 有一種假說認爲崑蟲可以通過關閉外骨骼上微小的呼吸閥門(氣孔)來防止蒸發。