He was criticised for being boring, strait-laced and narrow-minded.他被指无趣乏味，古板守旧，心胸狭窄。Yemen commands the strait at the southern end of the Red Sea.也门完全控制着红海南端的海峡。Ferries ply across a narrow strait to the island.渡船定时穿越狭窄的海...
土壤的采样使用芯形采样器.Soil is sampled with a core sampler.为了保持样品沉积物的层次结构, 就要用空心铁管采样器.To take samples that retain the larger structure of the sediment, a core sampler is used.我国降水自动采样器的现状 、 存在的问题和今后的发展趋势.The status, constraints an...