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1·Laking in petrol, the engine pursued out.

因为没有汽油，发动机慢慢熄火了。

2·The sports apparatus per student are unadequate and laking in variety.

体育课使用课本的比例在逐渐增加；

3·Maize endosperm mainly Contains zein, laking necessary amino acid such as lysine, methione and so on.

玉米胚乳蛋白质以醇溶性胶蛋白为主，缺乏赖氨酸、色氨酸等必需氨基酸。