oft

adv.

常常，再三；

1. Kings and bears oft worry keepers.
   国王和熊，常使守护人忧心忡忡。
2. Many a time and oft have we watched the trees glow as the sun set behind them.
   我们曾多次观看这些树在落日的映照下熠熠生辉。

An oft-studied reaction that may never have been: direct catalytic conversion of methanol or dimethyl ether to hydrocarbons on the s...
Flook PK, Klee S, Rowell CHF. Combined molecular phylogenetic analysis oft he Orthoptera (Arthropoda, Insecta) and implications for ...
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Langowski JL, Zhang XQ, Wu LL et al.IL-23 promotes tumour incidence and growth. Nature 442:461-465
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