When pollen maturating , many small calcium precipitates distributed in its cytoplasm, especially in nucleus.接近开花时的成熟花粉粒细胞质中, 细小的钙颗粒主要分布在营养细胞和生殖细胞中....
我被开除后，就拿了这些钥匙作为纪念。When I got canned, I took these keys as souvenirs.他是不是拿过车钥匙，开着她的车子玩儿？Had he taken the keys and played around with her car?钥匙放在抽屉里面左边一角。The keys are in the back left-hand corner of the drawer....