The flower bud of a water lily 百合 opens at sunset since .its opening is triggered(commence) .by the decreased light.
A、alleviated减轻C
暂无解析
Blue－green algae grow abundantly in salt marshes.
Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
Urbanrenewalprogramsstrivetoupgradeareasthatarebecomingslums.
Alligatorsstillexistinsomeofthedank潮湿swampsandbayous小海湾ofAlabama'scoastalregions.
Inliterature,caricatures讽刺画usuallycontainverbalexaggerationthroughwhichthewriterachievescomicandoftensatiric讽刺effects.
